ID CVE-2014-9423
Summary The svcauth_gss_accept_sec_context function in lib/rpc/svc_auth_gss.c in MIT Kerberos 5 (aka krb5) 1.11.x through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 transmits uninitialized interposer data to clients, which allows remote attackers to obtain sensitive information from process heap memory by sniffing the network for data in a handle field.
References
Vulnerable Configurations
  • MIT Kerberos 5 1.11
    cpe:2.3:a:mit:kerberos:5-1.11
  • MIT Kerberos 5 1.11.1
    cpe:2.3:a:mit:kerberos:5-1.11.1
  • MIT Kerberos 5 1.11.2
    cpe:2.3:a:mit:kerberos:5-1.11.2
  • MIT Kerberos 5 1.11.3
    cpe:2.3:a:mit:kerberos:5-1.11.3
  • MIT Kerberos 5 1.11.4
    cpe:2.3:a:mit:kerberos:5-1.11.4
  • MIT Kerberos 5 1.11.5
    cpe:2.3:a:mit:kerberos:5-1.11.5
  • MIT Kerberos 5 1.12
    cpe:2.3:a:mit:kerberos:5-1.12
  • MIT Kerberos 5 1.12.1
    cpe:2.3:a:mit:kerberos:5-1.12.1
  • MIT Kerberos 5 1.12.2
    cpe:2.3:a:mit:kerberos:5-1.12.2
  • MIT Kerberos 5-1.13
    cpe:2.3:a:mit:kerberos:5-1.13
CVSS
Base: 5.0 (as of 19-02-2015 - 11:07)
Impact:
Exploitability:
CWE CWE-200
CAPEC
  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
  • Reusing Session IDs (aka Session Replay)
    This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.
  • Using Slashes in Alternate Encoding
    This attack targets the encoding of the Slash characters. An attacker would try to exploit common filtering problems related to the use of the slashes characters to gain access to resources on the target host. Directory-driven systems, such as file systems and databases, typically use the slash character to indicate traversal between directories or other container components. For murky historical reasons, PCs (and, as a result, Microsoft OSs) choose to use a backslash, whereas the UNIX world typically makes use of the forward slash. The schizophrenic result is that many MS-based systems are required to understand both forms of the slash. This gives the attacker many opportunities to discover and abuse a number of common filtering problems. The goal of this pattern is to discover server software that only applies filters to one version, but not the other.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
nessus via4
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2015-0439.NASL
    description Updated krb5 packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. A NULL pointer dereference flaw was found in the MIT Kerberos SPNEGO acceptor for continuation tokens. A remote, unauthenticated attacker could use this flaw to crash a GSSAPI-enabled server application. (CVE-2014-4344) A buffer overflow was found in the KADM5 administration server (kadmind) when it was used with an LDAP back end for the KDC database. A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. (CVE-2014-4345) A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker with the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as 'kad/x') could use this flaw to impersonate any user to kadmind, and perform administrative actions as that user. (CVE-2014-9422) An information disclosure flaw was found in the way MIT Kerberos RPCSEC_GSS implementation (libgssrpc) handled certain requests. An attacker could send a specially crafted request to an application using libgssrpc to disclose a limited portion of uninitialized memory used by that application. (CVE-2014-9423) Two buffer over-read flaws were found in the way MIT Kerberos handled certain requests. A remote, unauthenticated attacker able to inject packets into a client or server application's GSSAPI session could use either of these flaws to crash the application. (CVE-2014-4341, CVE-2014-4342) A double-free flaw was found in the MIT Kerberos SPNEGO initiators. An attacker able to spoof packets to appear as though they are from an GSSAPI acceptor could use this flaw to crash a client application that uses MIT Kerberos. (CVE-2014-4343) Red Hat would like to thank the MIT Kerberos project for reporting the CVE-2014-5352, CVE-2014-9421, CVE-2014-9422, and CVE-2014-9423 issues. MIT Kerberos project acknowledges Nico Williams for helping with the analysis of CVE-2014-5352. The krb5 packages have been upgraded to upstream version 1.12, which provides a number of bug fixes and enhancements, including : * Added plug-in interfaces for principal-to-username mapping and verifying authorization to user accounts. * When communicating with a KDC over a connected TCP or HTTPS socket, the client gives the KDC more time to reply before it transmits the request to another server. (BZ#1049709, BZ#1127995) This update also fixes multiple bugs, for example : * The Kerberos client library did not recognize certain exit statuses that the resolver libraries could return when looking up the addresses of servers configured in the /etc/krb5.conf file or locating Kerberos servers using DNS service location. The library could treat non-fatal return codes as fatal errors. Now, the library interprets the specific return codes correctly. (BZ#1084068, BZ#1109102) In addition, this update adds various enhancements. Among others : * Added support for contacting KDCs and kpasswd servers through HTTPS proxies implementing the Kerberos KDC Proxy (KKDCP) protocol. (BZ#1109919)
    last seen 2019-02-21
    modified 2015-05-31
    plugin id 81896
    published 2015-03-18
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81896
    title CentOS 7 : krb5 (CESA-2015:0439)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2015-0439.NASL
    description From Red Hat Security Advisory 2015:0439 : Updated krb5 packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. A NULL pointer dereference flaw was found in the MIT Kerberos SPNEGO acceptor for continuation tokens. A remote, unauthenticated attacker could use this flaw to crash a GSSAPI-enabled server application. (CVE-2014-4344) A buffer overflow was found in the KADM5 administration server (kadmind) when it was used with an LDAP back end for the KDC database. A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. (CVE-2014-4345) A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker with the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as 'kad/x') could use this flaw to impersonate any user to kadmind, and perform administrative actions as that user. (CVE-2014-9422) An information disclosure flaw was found in the way MIT Kerberos RPCSEC_GSS implementation (libgssrpc) handled certain requests. An attacker could send a specially crafted request to an application using libgssrpc to disclose a limited portion of uninitialized memory used by that application. (CVE-2014-9423) Two buffer over-read flaws were found in the way MIT Kerberos handled certain requests. A remote, unauthenticated attacker able to inject packets into a client or server application's GSSAPI session could use either of these flaws to crash the application. (CVE-2014-4341, CVE-2014-4342) A double-free flaw was found in the MIT Kerberos SPNEGO initiators. An attacker able to spoof packets to appear as though they are from an GSSAPI acceptor could use this flaw to crash a client application that uses MIT Kerberos. (CVE-2014-4343) Red Hat would like to thank the MIT Kerberos project for reporting the CVE-2014-5352, CVE-2014-9421, CVE-2014-9422, and CVE-2014-9423 issues. MIT Kerberos project acknowledges Nico Williams for helping with the analysis of CVE-2014-5352. The krb5 packages have been upgraded to upstream version 1.12, which provides a number of bug fixes and enhancements, including : * Added plug-in interfaces for principal-to-username mapping and verifying authorization to user accounts. * When communicating with a KDC over a connected TCP or HTTPS socket, the client gives the KDC more time to reply before it transmits the request to another server. (BZ#1049709, BZ#1127995) This update also fixes multiple bugs, for example : * The Kerberos client library did not recognize certain exit statuses that the resolver libraries could return when looking up the addresses of servers configured in the /etc/krb5.conf file or locating Kerberos servers using DNS service location. The library could treat non-fatal return codes as fatal errors. Now, the library interprets the specific return codes correctly. (BZ#1084068, BZ#1109102) In addition, this update adds various enhancements. Among others : * Added support for contacting KDCs and kpasswd servers through HTTPS proxies implementing the Kerberos KDC Proxy (KKDCP) protocol. (BZ#1109919)
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 81805
    published 2015-03-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81805
    title Oracle Linux 7 : krb5 (ELSA-2015-0439)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20150305_KRB5_ON_SL7_X.NASL
    description A buffer overflow was found in the KADM5 administration server (kadmind) when it was used with an LDAP back end for the KDC database. A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. (CVE-2014-4345) A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker with the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as 'kad/x') could use this flaw to impersonate any user to kadmind, and perform administrative actions as that user. (CVE-2014-9422) An information disclosure flaw was found in the way MIT Kerberos RPCSEC_GSS implementation (libgssrpc) handled certain requests. An attacker could send a specially crafted request to an application using libgssrpc to disclose a limited portion of uninitialized memory used by that application. (CVE-2014-9423) Two buffer over-read flaws were found in the way MIT Kerberos handled certain requests. A remote, unauthenticated attacker able to inject packets into a client or server application's GSSAPI session could use either of these flaws to crash the application. (CVE-2014-4341, CVE-2014-4342) A double-free flaw was found in the MIT Kerberos SPNEGO initiators. An attacker able to spoof packets to appear as though they are from an GSSAPI acceptor could use this flaw to crash a client application that uses MIT Kerberos. (CVE-2014-4343) The krb5 packages have been upgraded to upstream version 1.12, which provides a number of bug fixes and enhancements, including : - Added plug-in interfaces for principal-to-username mapping and verifying authorization to user accounts. - When communicating with a KDC over a connected TCP or HTTPS socket, the client gives the KDC more time to reply before it transmits the request to another server. This update also fixes multiple bugs, for example : - The Kerberos client library did not recognize certain exit statuses that the resolver libraries could return when looking up the addresses of servers configured in the /etc/krb5.conf file or locating Kerberos servers using DNS service location. The library could treat non-fatal return codes as fatal errors. Now, the library interprets the specific return codes correctly. In addition, this update adds various enhancements. Among others : - Added support for contacting KDCs and kpasswd servers through HTTPS proxies implementing the Kerberos KDC Proxy (KKDCP) protocol.
    last seen 2019-02-21
    modified 2018-12-28
    plugin id 82255
    published 2015-03-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=82255
    title Scientific Linux Security Update : krb5 on SL7.x x86_64
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2015-0439.NASL
    description Updated krb5 packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. A NULL pointer dereference flaw was found in the MIT Kerberos SPNEGO acceptor for continuation tokens. A remote, unauthenticated attacker could use this flaw to crash a GSSAPI-enabled server application. (CVE-2014-4344) A buffer overflow was found in the KADM5 administration server (kadmind) when it was used with an LDAP back end for the KDC database. A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. (CVE-2014-4345) A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker with the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as 'kad/x') could use this flaw to impersonate any user to kadmind, and perform administrative actions as that user. (CVE-2014-9422) An information disclosure flaw was found in the way MIT Kerberos RPCSEC_GSS implementation (libgssrpc) handled certain requests. An attacker could send a specially crafted request to an application using libgssrpc to disclose a limited portion of uninitialized memory used by that application. (CVE-2014-9423) Two buffer over-read flaws were found in the way MIT Kerberos handled certain requests. A remote, unauthenticated attacker able to inject packets into a client or server application's GSSAPI session could use either of these flaws to crash the application. (CVE-2014-4341, CVE-2014-4342) A double-free flaw was found in the MIT Kerberos SPNEGO initiators. An attacker able to spoof packets to appear as though they are from an GSSAPI acceptor could use this flaw to crash a client application that uses MIT Kerberos. (CVE-2014-4343) Red Hat would like to thank the MIT Kerberos project for reporting the CVE-2014-5352, CVE-2014-9421, CVE-2014-9422, and CVE-2014-9423 issues. MIT Kerberos project acknowledges Nico Williams for helping with the analysis of CVE-2014-5352. The krb5 packages have been upgraded to upstream version 1.12, which provides a number of bug fixes and enhancements, including : * Added plug-in interfaces for principal-to-username mapping and verifying authorization to user accounts. * When communicating with a KDC over a connected TCP or HTTPS socket, the client gives the KDC more time to reply before it transmits the request to another server. (BZ#1049709, BZ#1127995) This update also fixes multiple bugs, for example : * The Kerberos client library did not recognize certain exit statuses that the resolver libraries could return when looking up the addresses of servers configured in the /etc/krb5.conf file or locating Kerberos servers using DNS service location. The library could treat non-fatal return codes as fatal errors. Now, the library interprets the specific return codes correctly. (BZ#1084068, BZ#1109102) In addition, this update adds various enhancements. Among others : * Added support for contacting KDCs and kpasswd servers through HTTPS proxies implementing the Kerberos KDC Proxy (KKDCP) protocol. (BZ#1109919)
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 81637
    published 2015-03-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81637
    title RHEL 7 : krb5 (RHSA-2015:0439)
  • NASL family Mandriva Local Security Checks
    NASL id MANDRIVA_MDVSA-2015-069.NASL
    description Multiple vulnerabilities has been discovered and corrected in krb5 : The krb5_gss_process_context_token function in lib/gssapi/krb5/process_context_token.c in the libgssapi_krb5 library in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly maintain security-context handles, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via crafted GSSAPI traffic, as demonstrated by traffic to kadmind (CVE-2014-5352). MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character, related to appl/user_user/server.c and lib/krb5/krb/recvauth.c (CVE-2014-5355). The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly handle partial XDR deserialization, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via malformed XDR data, as demonstrated by data sent to kadmind (CVE-2014-9421). The check_rpcsec_auth function in kadmin/server/kadm_rpc_svc.c in kadmind in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 allows remote authenticated users to bypass a kadmin/* authorization check and obtain administrative access by leveraging access to a two-component principal with an initial kadmind substring, as demonstrated by a ka/x principal (CVE-2014-9422). The svcauth_gss_accept_sec_context function in lib/rpc/svc_auth_gss.c in MIT Kerberos 5 (aka krb5) 1.11.x through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 transmits uninitialized interposer data to clients, which allows remote attackers to obtain sensitive information from process heap memory by sniffing the network for data in a handle field (CVE-2014-9423). The updated packages provides a solution for these security issues.
    last seen 2019-02-21
    modified 2018-07-19
    plugin id 82322
    published 2015-03-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=82322
    title Mandriva Linux Security Advisory : krb5 (MDVSA-2015:069)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2015-128.NASL
    description krb5 was updated to fix five security issues. These security issues were fixed : - CVE-2014-5351: current keys returned when randomizing the keys for a service principal (bnc#897874) - CVE-2014-5352: An authenticated attacker could cause a vulnerable application (including kadmind) to crash or to execute arbitrary code (bnc#912002). - CVE-2014-9421: An authenticated attacker could cause kadmind or other vulnerable server application to crash or to execute arbitrary code (bnc#912002). - CVE-2014-9422: An attacker who possess the key of a particularly named principal (such as 'kad/root') could impersonate any user to kadmind and perform administrative actions as that user (bnc#912002). - CVE-2014-9423: An attacker could attempt to glean sensitive information from the four or eight bytes of uninitialized data output by kadmind or other libgssrpc server application. Because MIT krb5 generally sanitizes memory containing krb5 keys before freeing it, it is unlikely that kadmind would leak Kerberos key information, but it is not impossible (bnc#912002). This non-security issue was fixed : - Work around replay cache creation race (bnc#898439).
    last seen 2019-02-21
    modified 2015-05-31
    plugin id 81304
    published 2015-02-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81304
    title openSUSE Security Update : krb5 (openSUSE-2015-128)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-2498-1.NASL
    description It was discovered that Kerberos incorrectly sent old keys in response to a -randkey -keepold request. An authenticated remote attacker could use this issue to forge tickets by leveraging administrative access. This issue only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-5351) It was discovered that the libgssapi_krb5 library incorrectly processed security context handles. A remote attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2014-5352) Patrik Kis discovered that Kerberos incorrectly handled LDAP queries with no results. An authenticated remote attacker could use this issue to cause the KDC to crash, resulting in a denial of service. (CVE-2014-5353) It was discovered that Kerberos incorrectly handled creating database entries for a keyless principal when using LDAP. An authenticated remote attacker could use this issue to cause the KDC to crash, resulting in a denial of service. (CVE-2014-5354) It was discovered that Kerberos incorrectly handled memory when processing XDR data. A remote attacker could use this issue to cause kadmind to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2014-9421) It was discovered that Kerberos incorrectly handled two-component server principals. A remote attacker could use this issue to perform impersonation attacks. (CVE-2014-9422) It was discovered that the libgssrpc library leaked uninitialized bytes. A remote attacker could use this issue to possibly obtain sensitive information. (CVE-2014-9423). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-12-01
    plugin id 81297
    published 2015-02-11
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81297
    title Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS / 14.10 : krb5 vulnerabilities (USN-2498-1)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DLA-146.NASL
    description Multiples vulnerabilities have been found in krb5, the MIT implementation of Kerberos : CVE-2014-5352 Incorrect memory management in the libgssapi_krb5 library might result in denial of service or the execution of arbitrary code. CVE-2014-9421 Incorrect memory management in kadmind's processing of XDR data might result in denial of service or the execution of arbitrary code. CVE-2014-9422 Incorrect processing of two-component server principals might result in impersonation attacks. CVE-2014-9423 An information leak in the libgssrpc library. NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-07-06
    plugin id 82129
    published 2015-03-26
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=82129
    title Debian DLA-146-1 : krb5 security update
  • NASL family AIX Local Security Checks
    NASL id AIX_NAS_ADVISORY3.NASL
    description The version of the Network Authentication Service (NAS) installed on the remote AIX host is affected by the following vulnerabilities related to Kerberos 5 : - Denial of service and remote code execution vulnerabilities exist due to security context handles not being properly maintained, allowing an authenticated, remote attacker to crash the service or execute arbitrary code using crafted GSSAPI traffic. (CVE-2014-5352) - A denial of service vulnerability exists due to improper handling of zero-byte or unterminated strings. (CVE-2014-5355) - Denial of service and remote code execution vulnerabilities exist which allow an authenticated, remote attacker to crash the service or execute arbitrary code using crafted, malformed XDR data. (CVE-2014-9421) - A privilege escalation vulnerability exists that allows an authenticated, remote attacker to gain administrative access via a flaw in kadmin authorization checks. (CVE-2014-9422) - An information disclosure vulnerability allows an attacker to gain information about process heap memory from NAS packets. (CVE-2014-9423)
    last seen 2019-02-21
    modified 2018-07-17
    plugin id 83874
    published 2015-05-28
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83874
    title AIX NAS Advisory : nas_advisory3.asc
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2015-2382.NASL
    description Security fix for CVE-2014-5352, CVE-2014-9421, CVE-2014-9422, CVE-2014-9423 Security fix for CVE-2014-5351 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2015-10-19
    plugin id 81705
    published 2015-03-10
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81705
    title Fedora 20 : krb5-1.11.5-18.fc20 (2015-2382)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_11_KRB5-20150206-150206.NASL
    description krb5 has been updated to fix four security issues : - gss_process_context_token() incorrectly frees context (bsc#912002). (CVE-2014-5352) - kadmind doubly frees partial deserialization results (bsc#912002). (CVE-2014-9421) - kadmind incorrectly validates server principal name (bsc#912002). (CVE-2014-9422) - libgssrpc server applications leak uninitialized bytes (bsc#912002) Additionally, these non-security issues have been fixed :. (CVE-2014-9423) - Winbind process hangs indefinitely without DC. (bsc#872912) - Hanging winbind processes. (bsc#906557)
    last seen 2019-02-21
    modified 2015-05-31
    plugin id 81312
    published 2015-02-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81312
    title SuSE 11.3 Security Update : krb5 (SAT Patch Number 10282)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2015-0290-2.NASL
    description MIT kerberos krb5 was updated to fix several security issues and bugs. Security issues fixed: CVE-2014-5351: The kadm5_randkey_principal_3 function in lib/kadm5/srv/svr_principal.c in kadmind in MIT Kerberos 5 (aka krb5) sent old keys in a response to a -randkey -keepold request, which allowed remote authenticated users to forge tickets by leveraging administrative access. - CVE-2014-5352: In the MIT krb5 libgssapi_krb5 library, after gss_process_context_token() is used to process a valid context deletion token, the caller was left with a security context handle containing a dangling pointer. Further uses of this handle would have resulted in use-after-free and double-free memory access violations. libgssrpc server applications such as kadmind were vulnerable as they can be instructed to call gss_process_context_token(). - CVE-2014-9421: If the MIT krb5 kadmind daemon receives invalid XDR data from an authenticated user, it may have performed use-after-free and double-free memory access violations while cleaning up the partial deserialization results. Other libgssrpc server applications might also been vulnerable if they contain insufficiently defensive XDR functions. - CVE-2014-9422: The MIT krb5 kadmind daemon incorrectly accepted authentications to two-component server principals whose first component is a left substring of 'kadmin' or whose realm is a left prefix of the default realm. - CVE-2014-9423: libgssrpc applications including kadmind output four or eight bytes of uninitialized memory to the network as part of an unused 'handle' field in replies to clients. Bugs fixed : - Work around replay cache creation race; (bnc#898439). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 83683
    published 2015-05-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83683
    title SUSE SLED12 / SLES12 Security Update : krb5 (SUSE-SU-2015:0290-2)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2015-0290-1.NASL
    description MIT kerberos krb5 was updated to fix several security issues and bugs. Security issues fixed: CVE-2014-5351: The kadm5_randkey_principal_3 function in lib/kadm5/srv/svr_principal.c in kadmind in MIT Kerberos 5 (aka krb5) sent old keys in a response to a -randkey -keepold request, which allowed remote authenticated users to forge tickets by leveraging administrative access. - CVE-2014-5352: In the MIT krb5 libgssapi_krb5 library, after gss_process_context_token() is used to process a valid context deletion token, the caller was left with a security context handle containing a dangling pointer. Further uses of this handle would have resulted in use-after-free and double-free memory access violations. libgssrpc server applications such as kadmind were vulnerable as they can be instructed to call gss_process_context_token(). - CVE-2014-9421: If the MIT krb5 kadmind daemon receives invalid XDR data from an authenticated user, it may have performed use-after-free and double-free memory access violations while cleaning up the partial deserialization results. Other libgssrpc server applications might also been vulnerable if they contain insufficiently defensive XDR functions. - CVE-2014-9422: The MIT krb5 kadmind daemon incorrectly accepted authentications to two-component server principals whose first component is a left substring of 'kadmin' or whose realm is a left prefix of the default realm. - CVE-2014-9423: libgssrpc applications including kadmind output four or eight bytes of uninitialized memory to the network as part of an unused 'handle' field in replies to clients. Bugs fixed : - Work around replay cache creation race; (bnc#898439). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2018-11-29
    plugin id 83682
    published 2015-05-20
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=83682
    title SUSE SLES12 Security Update : krb5 (SUSE-SU-2015:0290-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2015-2347.NASL
    description Security fix for CVE-2014-5352, CVE-2014-9421, CVE-2014-9422, CVE-2014-9423 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2019-02-21
    modified 2015-10-19
    plugin id 81796
    published 2015-03-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81796
    title Fedora 21 : krb5-1.12.2-14.fc21 (2015-2347)
  • NASL family FreeBSD Local Security Checks
    NASL id FREEBSD_PKG_24CE5597ACAB11E4A847206A8A720317.NASL
    description SO-AND-SO reports : CVE-2014-5352: In the MIT krb5 libgssapi_krb5 library, after gss_process_context_token() is used to process a valid context deletion token, the caller is left with a security context handle containing a dangling pointer. Further uses of this handle will result in use-after-free and double-free memory access violations. libgssrpc server applications such as kadmind are vulnerable as they can be instructed to call gss_process_context_token(). CVE-2014-9421: If the MIT krb5 kadmind daemon receives invalid XDR data from an authenticated user, it may perform use-after-free and double-free memory access violations while cleaning up the partial deserialization results. Other libgssrpc server applications may also be vulnerable if they contain insufficiently defensive XDR functions. CVE-2014-9422: The MIT krb5 kadmind daemon incorrectly accepts authentications to two-component server principals whose first component is a left substring of 'kadmin' or whose realm is a left prefix of the default realm. CVE-2014-9423: libgssrpc applications including kadmind output four or eight bytes of uninitialized memory to the network as part of an unused 'handle' field in replies to clients.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 81175
    published 2015-02-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81175
    title FreeBSD : krb5 -- Vulnerabilities in kadmind, libgssrpc, gss_process_context_token VU#540092 (24ce5597-acab-11e4-a847-206a8a720317)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-3153.NASL
    description Multiple vulnerabilities have been found in krb5, the MIT implementation of Kerberos : - CVE-2014-5352 Incorrect memory management in the libgssapi_krb5 library might result in denial of service or the execution of arbitrary code. - CVE-2014-9421 Incorrect memory management in kadmind's processing of XDR data might result in denial of service or the execution of arbitrary code. - CVE-2014-9422 Incorrect processing of two-component server principals might result in impersonation attacks. - CVE-2014-9423 An information leak in the libgssrpc library.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 81150
    published 2015-02-04
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=81150
    title Debian DSA-3153-1 : krb5 - security update
redhat via4
advisories
bugzilla
id 1184629
title kinit loops on principals on unknown error
oval
AND
  • OR
    • comment Red Hat Enterprise Linux 7 Client is installed
      oval oval:com.redhat.rhsa:tst:20140675001
    • comment Red Hat Enterprise Linux 7 Server is installed
      oval oval:com.redhat.rhsa:tst:20140675002
    • comment Red Hat Enterprise Linux 7 Workstation is installed
      oval oval:com.redhat.rhsa:tst:20140675003
    • comment Red Hat Enterprise Linux 7 ComputeNode is installed
      oval oval:com.redhat.rhsa:tst:20140675004
  • OR
    • AND
      • comment krb5-devel is earlier than 0:1.12.2-14.el7
        oval oval:com.redhat.rhsa:tst:20150439007
      • comment krb5-devel is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20100863012
    • AND
      • comment krb5-libs is earlier than 0:1.12.2-14.el7
        oval oval:com.redhat.rhsa:tst:20150439015
      • comment krb5-libs is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20100863016
    • AND
      • comment krb5-pkinit is earlier than 0:1.12.2-14.el7
        oval oval:com.redhat.rhsa:tst:20150439005
      • comment krb5-pkinit is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20150439006
    • AND
      • comment krb5-server is earlier than 0:1.12.2-14.el7
        oval oval:com.redhat.rhsa:tst:20150439009
      • comment krb5-server is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20100863010
    • AND
      • comment krb5-server-ldap is earlier than 0:1.12.2-14.el7
        oval oval:com.redhat.rhsa:tst:20150439013
      • comment krb5-server-ldap is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20100863006
    • AND
      • comment krb5-workstation is earlier than 0:1.12.2-14.el7
        oval oval:com.redhat.rhsa:tst:20150439011
      • comment krb5-workstation is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20100863014
rhsa
id RHSA-2015:0439
released 2015-03-05
severity Moderate
title RHSA-2015:0439: krb5 security, bug fix and enhancement update (Moderate)
rpms
  • krb5-devel-0:1.12.2-14.el7
  • krb5-libs-0:1.12.2-14.el7
  • krb5-pkinit-0:1.12.2-14.el7
  • krb5-server-0:1.12.2-14.el7
  • krb5-server-ldap-0:1.12.2-14.el7
  • krb5-workstation-0:1.12.2-14.el7
refmap via4
bid 72503
confirm
debian DSA-3153
fedora
  • FEDORA-2015-2347
  • FEDORA-2015-2382
mandriva MDVSA-2015:069
suse
  • SUSE-SU-2015:0257
  • SUSE-SU-2015:0290
  • openSUSE-SU-2015:0255
ubuntu USN-2498-1
Last major update 28-11-2016 - 14:13
Published 19-02-2015 - 06:59
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