ID CVE-2008-1949
Summary The _gnutls_recv_client_kx_message function in lib/gnutls_kx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process Client Hello messages within a TLS message after one has already been processed, which allows remote attackers to cause a denial of service (NULL dereference and crash) via a TLS message containing multiple Client Hello messages, aka GNUTLS-SA-2008-1-2.
References
Vulnerable Configurations
  • GNU GnuTLS 1.0.18
    cpe:2.3:a:gnu:gnutls:1.0.18
  • GNU GnuTLS 1.0.19
    cpe:2.3:a:gnu:gnutls:1.0.19
  • GNU GnuTLS 1.0.20
    cpe:2.3:a:gnu:gnutls:1.0.20
  • GNU GnuTLS 1.0.21
    cpe:2.3:a:gnu:gnutls:1.0.21
  • GNU GnuTLS 1.0.22
    cpe:2.3:a:gnu:gnutls:1.0.22
  • GNU GnuTLS 1.0.23
    cpe:2.3:a:gnu:gnutls:1.0.23
  • GNU GnuTLS 1.0.24
    cpe:2.3:a:gnu:gnutls:1.0.24
  • GNU GnuTLS 1.0.25
    cpe:2.3:a:gnu:gnutls:1.0.25
  • GNU GnuTLS 1.1.13
    cpe:2.3:a:gnu:gnutls:1.1.13
  • GNU GnuTLS 1.1.14
    cpe:2.3:a:gnu:gnutls:1.1.14
  • GNU GnuTLS 1.1.15
    cpe:2.3:a:gnu:gnutls:1.1.15
  • GNU GnuTLS 1.1.16
    cpe:2.3:a:gnu:gnutls:1.1.16
  • GNU GnuTLS 1.1.17
    cpe:2.3:a:gnu:gnutls:1.1.17
  • GNU GnuTLS 1.1.18
    cpe:2.3:a:gnu:gnutls:1.1.18
  • GNU GnuTLS 1.1.19
    cpe:2.3:a:gnu:gnutls:1.1.19
  • GNU GnuTLS 1.1.20
    cpe:2.3:a:gnu:gnutls:1.1.20
  • GNU GnuTLS 1.1.21
    cpe:2.3:a:gnu:gnutls:1.1.21
  • GNU GnuTLS 1.1.22
    cpe:2.3:a:gnu:gnutls:1.1.22
  • GNU GnuTLS 1.1.23
    cpe:2.3:a:gnu:gnutls:1.1.23
  • GNU GnuTLS 1.2.0
    cpe:2.3:a:gnu:gnutls:1.2.0
  • GNU GnuTLS 1.2.1
    cpe:2.3:a:gnu:gnutls:1.2.1
  • GNU GnuTLS 1.2.2
    cpe:2.3:a:gnu:gnutls:1.2.2
  • GNU GnuTLS 1.2.3
    cpe:2.3:a:gnu:gnutls:1.2.3
  • GNU GnuTLS 1.2.4
    cpe:2.3:a:gnu:gnutls:1.2.4
  • GNU GnuTLS 1.2.5
    cpe:2.3:a:gnu:gnutls:1.2.5
  • GNU GnuTLS 1.2.6
    cpe:2.3:a:gnu:gnutls:1.2.6
  • GNU GnuTLS 1.2.7
    cpe:2.3:a:gnu:gnutls:1.2.7
  • GNU GnuTLS 1.2.8
    cpe:2.3:a:gnu:gnutls:1.2.8
  • GNU GnuTLS 1.2.9
    cpe:2.3:a:gnu:gnutls:1.2.9
  • GNU GnuTLS 1.2.10
    cpe:2.3:a:gnu:gnutls:1.2.10
  • GNU GnuTLS 1.2.11
    cpe:2.3:a:gnu:gnutls:1.2.11
  • GNU GnuTLS 1.3.0
    cpe:2.3:a:gnu:gnutls:1.3.0
  • GNU GnuTLS 1.3.1
    cpe:2.3:a:gnu:gnutls:1.3.1
  • GNU GnuTLS 1.3.2
    cpe:2.3:a:gnu:gnutls:1.3.2
  • GNU GnuTLS 1.3.3
    cpe:2.3:a:gnu:gnutls:1.3.3
  • GNU GnuTLS 1.3.4
    cpe:2.3:a:gnu:gnutls:1.3.4
  • GNU GnuTLS 1.3.5
    cpe:2.3:a:gnu:gnutls:1.3.5
  • GNU GnuTLS 1.4.0
    cpe:2.3:a:gnu:gnutls:1.4.0
  • GNU GnuTLS 1.4.1
    cpe:2.3:a:gnu:gnutls:1.4.1
  • GNU GnuTLS 1.4.2
    cpe:2.3:a:gnu:gnutls:1.4.2
  • GNU GnuTLS 1.4.3
    cpe:2.3:a:gnu:gnutls:1.4.3
  • GNU GnuTLS 1.4.4
    cpe:2.3:a:gnu:gnutls:1.4.4
  • GNU GnuTLS 1.4.5
    cpe:2.3:a:gnu:gnutls:1.4.5
  • GNU GnuTLS 1.5.0
    cpe:2.3:a:gnu:gnutls:1.5.0
  • GNU GnuTLS 1.5.1
    cpe:2.3:a:gnu:gnutls:1.5.1
  • GNU GnuTLS 1.5.2
    cpe:2.3:a:gnu:gnutls:1.5.2
  • GNU GnuTLS 1.5.3
    cpe:2.3:a:gnu:gnutls:1.5.3
  • GNU GnuTLS 1.5.4
    cpe:2.3:a:gnu:gnutls:1.5.4
  • GNU GnuTLS 1.5.5
    cpe:2.3:a:gnu:gnutls:1.5.5
  • GNU GnuTLS 1.6.0
    cpe:2.3:a:gnu:gnutls:1.6.0
  • GNU GnuTLS 1.6.1
    cpe:2.3:a:gnu:gnutls:1.6.1
  • GNU GnuTLS 1.6.2
    cpe:2.3:a:gnu:gnutls:1.6.2
  • GNU GnuTLS 1.6.3
    cpe:2.3:a:gnu:gnutls:1.6.3
  • GNU GnuTLS 1.7.0
    cpe:2.3:a:gnu:gnutls:1.7.0
  • GNU GnuTLS 1.7.1
    cpe:2.3:a:gnu:gnutls:1.7.1
  • GNU GnuTLS 1.7.2
    cpe:2.3:a:gnu:gnutls:1.7.2
  • GNU GnuTLS 1.7.3
    cpe:2.3:a:gnu:gnutls:1.7.3
  • GNU GnuTLS 1.7.4
    cpe:2.3:a:gnu:gnutls:1.7.4
  • GNU GnuTLS 1.7.5
    cpe:2.3:a:gnu:gnutls:1.7.5
  • GNU GnuTLS 1.7.6
    cpe:2.3:a:gnu:gnutls:1.7.6
  • GNU GnuTLS 1.7.7
    cpe:2.3:a:gnu:gnutls:1.7.7
  • GNU GnuTLS 1.7.8
    cpe:2.3:a:gnu:gnutls:1.7.8
  • GNU GnuTLS 1.7.9
    cpe:2.3:a:gnu:gnutls:1.7.9
  • GNU GnuTLS 1.7.10
    cpe:2.3:a:gnu:gnutls:1.7.10
  • GNU GnuTLS 1.7.11
    cpe:2.3:a:gnu:gnutls:1.7.11
  • GNU GnuTLS 1.7.12
    cpe:2.3:a:gnu:gnutls:1.7.12
  • GNU GnuTLS 1.7.13
    cpe:2.3:a:gnu:gnutls:1.7.13
  • GNU GnuTLS 1.7.14
    cpe:2.3:a:gnu:gnutls:1.7.14
  • GNU GnuTLS 1.7.15
    cpe:2.3:a:gnu:gnutls:1.7.15
  • GNU GnuTLS 1.7.16
    cpe:2.3:a:gnu:gnutls:1.7.16
  • GNU GnuTLS 1.7.17
    cpe:2.3:a:gnu:gnutls:1.7.17
  • GNU GnuTLS 1.7.18
    cpe:2.3:a:gnu:gnutls:1.7.18
  • GNU GnuTLS 1.7.19
    cpe:2.3:a:gnu:gnutls:1.7.19
  • GNU GnuTLS 2.0.0
    cpe:2.3:a:gnu:gnutls:2.0.0
  • GNU GnuTLS 2.0.1
    cpe:2.3:a:gnu:gnutls:2.0.1
  • GNU GnuTLS 2.0.2
    cpe:2.3:a:gnu:gnutls:2.0.2
  • GNU GnuTLS 2.0.3
    cpe:2.3:a:gnu:gnutls:2.0.3
  • GNU GnuTLS 2.0.4
    cpe:2.3:a:gnu:gnutls:2.0.4
  • GNU GnuTLS 2.1.0
    cpe:2.3:a:gnu:gnutls:2.1.0
  • GNU GnuTLS 2.1.1
    cpe:2.3:a:gnu:gnutls:2.1.1
  • GNU GnuTLS 2.1.2
    cpe:2.3:a:gnu:gnutls:2.1.2
  • GNU GnuTLS 2.1.3
    cpe:2.3:a:gnu:gnutls:2.1.3
  • GNU GnuTLS 2.1.4
    cpe:2.3:a:gnu:gnutls:2.1.4
  • GNU GnuTLS 2.1.5
    cpe:2.3:a:gnu:gnutls:2.1.5
  • GNU GnuTLS 2.1.6
    cpe:2.3:a:gnu:gnutls:2.1.6
  • GNU GnuTLS 2.1.7
    cpe:2.3:a:gnu:gnutls:2.1.7
  • GNU GnuTLS 2.1.8
    cpe:2.3:a:gnu:gnutls:2.1.8
  • GNU GnuTLS 2.2.0
    cpe:2.3:a:gnu:gnutls:2.2.0
  • GNU GnuTLS 2.2.1
    cpe:2.3:a:gnu:gnutls:2.2.1
  • GNU GnuTLS 2.2.2
    cpe:2.3:a:gnu:gnutls:2.2.2
  • GNU GnuTLS 2.2.3
    cpe:2.3:a:gnu:gnutls:2.2.3
  • GNU GnuTLS 2.2.4
    cpe:2.3:a:gnu:gnutls:2.2.4
  • GNU GnuTLS 2.2.5
    cpe:2.3:a:gnu:gnutls:2.2.5
  • GNU GnuTLS 2.3.0
    cpe:2.3:a:gnu:gnutls:2.3.0
  • GNU GnuTLS 2.3.1
    cpe:2.3:a:gnu:gnutls:2.3.1
  • GNU GnuTLS 2.3.2
    cpe:2.3:a:gnu:gnutls:2.3.2
  • GNU GnuTLS 2.3.3
    cpe:2.3:a:gnu:gnutls:2.3.3
  • GNU GnuTLS 2.3.4
    cpe:2.3:a:gnu:gnutls:2.3.4
  • GNU GnuTLS 2.3.5
    cpe:2.3:a:gnu:gnutls:2.3.5
  • GNU GnuTLS 2.3.6
    cpe:2.3:a:gnu:gnutls:2.3.6
  • GNU GnuTLS 2.3.7
    cpe:2.3:a:gnu:gnutls:2.3.7
  • GNU GnuTLS 2.3.8
    cpe:2.3:a:gnu:gnutls:2.3.8
  • GNU GnuTLS 2.3.9
    cpe:2.3:a:gnu:gnutls:2.3.9
  • GNU GnuTLS 2.3.10
    cpe:2.3:a:gnu:gnutls:2.3.10
  • GNU GnuTLS 2.3.11
    cpe:2.3:a:gnu:gnutls:2.3.11
CVSS
Base: 9.3 (as of 21-05-2008 - 10:28)
Impact:
Exploitability:
CWE CWE-287
CAPEC
  • Authentication Abuse
    An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker. This attack may exploit assumptions made by the target's authentication procedures, such as assumptions regarding trust relationships or assumptions regarding the generation of secret values. This attack differs from Authentication Bypass attacks in that Authentication Abuse allows the attacker to be certified as a valid user through illegitimate means, while Authentication Bypass allows the user to access protected material without ever being certified as an authenticated user. This attack does not rely on prior sessions established by successfully authenticating users, as relied upon for the "Exploitation of Session Variables, Resource IDs and other Trusted Credentials" attack patterns.
  • 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.
  • Utilizing REST's Trust in the System Resource to Register Man in the Middle
    This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to place man in the middle once SSL is terminated. Rest applications premise is that they leverage existing infrastructure to deliver web services functionality. An example of this is a Rest application that uses HTTP Get methods and receives a HTTP response with an XML document. These Rest style web services are deployed on existing infrastructure such as Apache and IIS web servers with no SOAP stack required. Unfortunately from a security standpoint, there frequently is no interoperable identity security mechanism deployed, so Rest developers often fall back to SSL to deliver security. In large data centers, SSL is typically terminated at the edge of the network - at the firewall, load balancer, or router. Once the SSL is terminated the HTTP request is in the clear (unless developers have hashed or encrypted the values, but this is rare). The attacker can utilize a sniffer such as Wireshark to snapshot the credentials, such as username and password that are passed in the clear once SSL is terminated. Once the attacker gathers these credentials, they can submit requests to the web service provider just as authorized user do. There is not typically an authentication on the client side, beyond what is passed in the request itself so once this is compromised, then this is generally sufficient to compromise the service's authentication scheme.
  • Man in the Middle Attack
    This type of attack targets the communication between two components (typically client and server). The attacker places himself in the communication channel between the two components. Whenever one component attempts to communicate with the other (data flow, authentication challenges, etc.), the data first goes to the attacker, who has the opportunity to observe or alter it, and it is then passed on to the other component as if it was never intercepted. This interposition is transparent leaving the two compromised components unaware of the potential corruption or leakage of their communications. The potential for Man-in-the-Middle attacks yields an implicit lack of trust in communication or identify between two components.
Access
VectorComplexityAuthentication
NETWORK MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
nessus via4
  • NASL family Windows
    NASL id VLC_0_8_6H.NASL
    description The version of VLC Media Player installed on the remote host reportedly includes versions of GnuTLS, libgcrypt, and libxml2 that are affected by various denial of service and buffer overflow vulnerabilities.
    last seen 2019-02-21
    modified 2018-08-06
    plugin id 33278
    published 2008-06-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=33278
    title VLC Media Player < 0.8.6h Multiple Vulnerabilities
  • NASL family SuSE Local Security Checks
    NASL id SUSE_GNUTLS-5601.NASL
    description Multiple issues have been fixed in gnutls. CVE-2008-1948 (GNUTLS-SA-2008-1-1), CVE-2008-1949 (GNUTLS-SA-2008-1-2) and CVE-2008-1950 (GNUTLS-SA-2008-1-3) have been assigned to this issue.
    last seen 2019-02-21
    modified 2016-12-22
    plugin id 34215
    published 2008-09-16
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=34215
    title SuSE 10 Security Update : GnuTLS (ZYPP Patch Number 5601)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2008-0492.NASL
    description From Red Hat Security Advisory 2008:0492 : Updated gnutls packages that fix several security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team. The GnuTLS Library provides support for cryptographic algorithms and protocols such as TLS. GnuTLS includes libtasn1, a library developed for ASN.1 structures management that includes DER encoding and decoding. Flaws were found in the way GnuTLS handles malicious client connections. A malicious remote client could send a specially crafted request to a service using GnuTLS that could cause the service to crash. (CVE-2008-1948, CVE-2008-1949, CVE-2008-1950) We believe it is possible to leverage the flaw CVE-2008-1948 to execute arbitrary code but have been unable to prove this at the time of releasing this advisory. Red Hat Enterprise Linux 4 does not ship with any applications directly affected by this flaw. Third-party software which runs on Red Hat Enterprise Linux 4 could, however, be affected by this vulnerability. Consequently, we have assigned it important severity. Users of GnuTLS are advised to upgrade to these updated packages, which contain a backported patch that corrects these issues.
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 67697
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67697
    title Oracle Linux 4 : gnutls (ELSA-2008-0492)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2008-4259.NASL
    description Fixes critical security issue GNUTLS-SA-2008-1 described here: http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00060.html All applications and system services which utilize gnutls library must be restarted for the updates to take effect. 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 2016-12-08
    plugin id 32412
    published 2008-05-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=32412
    title Fedora 9 : gnutls-2.0.4-3.fc9 (2008-4259)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_GNUTLS-5543.NASL
    description Multiple issues have been fixed in gnutls. CVE-2008-1948 (GNUTLS-SA-2008-1-1), CVE-2008-1949 (GNUTLS-SA-2008-1-2) and CVE-2008-1950 (GNUTLS-SA-2008-1-3) have been assigned to this issue.
    last seen 2019-02-21
    modified 2016-12-22
    plugin id 41514
    published 2009-09-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=41514
    title SuSE 10 Security Update : GnuTLS (ZYPP Patch Number 5543)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2008-0492.NASL
    description Updated gnutls packages that fix several security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team. The GnuTLS Library provides support for cryptographic algorithms and protocols such as TLS. GnuTLS includes libtasn1, a library developed for ASN.1 structures management that includes DER encoding and decoding. Flaws were found in the way GnuTLS handles malicious client connections. A malicious remote client could send a specially crafted request to a service using GnuTLS that could cause the service to crash. (CVE-2008-1948, CVE-2008-1949, CVE-2008-1950) We believe it is possible to leverage the flaw CVE-2008-1948 to execute arbitrary code but have been unable to prove this at the time of releasing this advisory. Red Hat Enterprise Linux 4 does not ship with any applications directly affected by this flaw. Third-party software which runs on Red Hat Enterprise Linux 4 could, however, be affected by this vulnerability. Consequently, we have assigned it important severity. Users of GnuTLS are advised to upgrade to these updated packages, which contain a backported patch that corrects these issues.
    last seen 2019-02-21
    modified 2018-11-27
    plugin id 32429
    published 2008-05-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=32429
    title RHEL 4 : gnutls (RHSA-2008:0492)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20080520_GNUTLS_ON_SL5_X.NASL
    description Flaws were found in the way GnuTLS handles malicious client connections. A malicious remote client could send a specially crafted request to a service using GnuTLS that could cause the service to crash. (CVE-2008-1948, CVE-2008-1949, CVE-2008-1950) At this time we have not seen any code that is using this exploit. But in Scientific Linux 5 there are some applications, such as CUPS, that would be directly vulnerable if/when there is an exploit. Because of the potential threat we are labeling this critical.
    last seen 2019-02-21
    modified 2019-01-07
    plugin id 60401
    published 2012-08-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=60401
    title Scientific Linux Security Update : gnutls on SL5.x i386/x86_64
  • NASL family Mandriva Local Security Checks
    NASL id MANDRIVA_MDVSA-2008-106.NASL
    description Flaws discovered in versions prior to 2.2.4 (stable) and 2.3.10 (development) of GnuTLS allow an attacker to cause denial of service (application crash), and maybe (so far undetermined) execute arbitrary code. The updated packages have been patched to fix these flaws. Note that any applications using this library must be restarted for the update to take effect.
    last seen 2019-02-21
    modified 2018-07-19
    plugin id 37379
    published 2009-04-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=37379
    title Mandriva Linux Security Advisory : gnutls (MDVSA-2008:106)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2008-0489.NASL
    description From Red Hat Security Advisory 2008:0489 : Updated gnutls packages that fix several security issues are now available for Red Hat Enterprise Linux 5. This update has been rated as having critical security impact by the Red Hat Security Response Team. The GnuTLS Library provides support for cryptographic algorithms and protocols such as TLS. GnuTLS includes libtasn1, a library developed for ASN.1 structures management that includes DER encoding and decoding. Flaws were found in the way GnuTLS handles malicious client connections. A malicious remote client could send a specially crafted request to a service using GnuTLS that could cause the service to crash. (CVE-2008-1948, CVE-2008-1949, CVE-2008-1950) We believe it is possible to leverage the flaw CVE-2008-1948 to execute arbitrary code but have been unable to prove this at the time of releasing this advisory. Red Hat Enterprise Linux 5 includes applications, such as CUPS, that would be directly vulnerable to any such an exploit, however. Consequently, we have assigned it critical severity. Users of GnuTLS are advised to upgrade to these updated packages, which contain a backported patch that corrects these issues.
    last seen 2019-02-21
    modified 2018-07-18
    plugin id 67696
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67696
    title Oracle Linux 5 : gnutls (ELSA-2008-0489)
  • NASL family SuSE Local Security Checks
    NASL id SUSE9_12230.NASL
    description Multiple issues have been fixed in gnutls. CVE-2008-1948 (GNUTLS-SA-2008-1-1), CVE-2008-1949 (GNUTLS-SA-2008-1-2) and CVE-2008-1950 (GNUTLS-SA-2008-1-3) have been assigned to this issue.
    last seen 2019-02-21
    modified 2016-12-21
    plugin id 41237
    published 2009-09-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=41237
    title SuSE9 Security Update : GnuTLS (YOU Patch Number 12230)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2008-0492.NASL
    description Updated gnutls packages that fix several security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team. The GnuTLS Library provides support for cryptographic algorithms and protocols such as TLS. GnuTLS includes libtasn1, a library developed for ASN.1 structures management that includes DER encoding and decoding. Flaws were found in the way GnuTLS handles malicious client connections. A malicious remote client could send a specially crafted request to a service using GnuTLS that could cause the service to crash. (CVE-2008-1948, CVE-2008-1949, CVE-2008-1950) We believe it is possible to leverage the flaw CVE-2008-1948 to execute arbitrary code but have been unable to prove this at the time of releasing this advisory. Red Hat Enterprise Linux 4 does not ship with any applications directly affected by this flaw. Third-party software which runs on Red Hat Enterprise Linux 4 could, however, be affected by this vulnerability. Consequently, we have assigned it important severity. Users of GnuTLS are advised to upgrade to these updated packages, which contain a backported patch that corrects these issues.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 43689
    published 2010-01-06
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=43689
    title CentOS 4 : gnutls (CESA-2008:0492)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2008-0489.NASL
    description Updated gnutls packages that fix several security issues are now available for Red Hat Enterprise Linux 5. This update has been rated as having critical security impact by the Red Hat Security Response Team. The GnuTLS Library provides support for cryptographic algorithms and protocols such as TLS. GnuTLS includes libtasn1, a library developed for ASN.1 structures management that includes DER encoding and decoding. Flaws were found in the way GnuTLS handles malicious client connections. A malicious remote client could send a specially crafted request to a service using GnuTLS that could cause the service to crash. (CVE-2008-1948, CVE-2008-1949, CVE-2008-1950) We believe it is possible to leverage the flaw CVE-2008-1948 to execute arbitrary code but have been unable to prove this at the time of releasing this advisory. Red Hat Enterprise Linux 5 includes applications, such as CUPS, that would be directly vulnerable to any such an exploit, however. Consequently, we have assigned it critical severity. Users of GnuTLS are advised to upgrade to these updated packages, which contain a backported patch that corrects these issues.
    last seen 2019-02-21
    modified 2018-11-27
    plugin id 32428
    published 2008-05-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=32428
    title RHEL 5 : gnutls (RHSA-2008:0489)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-1581.NASL
    description Several remote vulnerabilities have been discovered in GNUTLS, an implementation of the SSL/TLS protocol suite. NOTE: The libgnutls13 package, which provides the GNUTLS library, does not contain logic to automatically restart potentially affected services. You must restart affected services manually (mainly Exim, using '/etc/init.d/exim4 restart') after applying the update, to make the changes fully effective. Alternatively, you can reboot the system. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2008-1948 A pre-authentication heap overflow involving oversized session resumption data may lead to arbitrary code execution. - CVE-2008-1949 Repeated client hellos may result in a pre-authentication denial of service condition due to a NULL pointer dereference. - CVE-2008-1950 Decoding cipher padding with an invalid record length may cause GNUTLS to read memory beyond the end of the received record, leading to a pre-authentication denial of service condition.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 32403
    published 2008-05-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=32403
    title Debian DSA-1581-1 : gnutls13 - several vulnerabilities
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-613-1.NASL
    description Multiple flaws were discovered in the connection handling of GnuTLS. A remote attacker could exploit this to crash applications linked against GnuTLS, or possibly execute arbitrary code with permissions of the application's user. 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 2018-11-28
    plugin id 32432
    published 2008-05-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=32432
    title Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : gnutls12, gnutls13 vulnerabilities (USN-613-1)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2008-4274.NASL
    description Fixes critical security issue GNUTLS-SA-2008-1 described here: http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00060.html All applications and system services which utilize gnutls library must be restarted for the updates to take effect. 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 2016-12-08
    plugin id 32414
    published 2008-05-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=32414
    title Fedora 7 : gnutls-1.6.3-3.fc7 (2008-4274)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-200805-20.NASL
    description The remote host is affected by the vulnerability described in GLSA-200805-20 (GnuTLS: Execution of arbitrary code) Ossi Herrala and Jukka Taimisto of Codenomicon reported three vulnerabilities in libgnutls of GnuTLS: 'Client Hello' messages containing an invalid server name can lead to a buffer overflow when evaluating 'Security Parameters' (CVE-2008-1948). Multiple 'Client Hello' messages can lead to a NULL pointer dereference (CVE-2008-1949). A TLS handshake including an encrypted 'Client Hello' message and an invalid record length could lead to a buffer overread (CVE-2008-1950). Impact : Unauthenticated remote attackers could exploit these vulnerabilities to cause Denial of Service conditions in daemons using GnuTLS. The first vulnerability (CVE-2008-1948) might allow for the execution of arbitrary code with the privileges of the daemon handling incoming TLS connections. Workaround : There is no known workaround at this time.
    last seen 2019-02-21
    modified 2018-08-10
    plugin id 32418
    published 2008-05-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=32418
    title GLSA-200805-20 : GnuTLS: Execution of arbitrary code
  • NASL family Slackware Local Security Checks
    NASL id SLACKWARE_SSA_2008-180-01.NASL
    description New gnutls packages are available for Slackware 12.0, 12.1, and -current to fix security issues.
    last seen 2018-09-01
    modified 2016-12-09
    plugin id 33288
    published 2008-07-02
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=33288
    title Slackware 12.0 / 12.1 / current : gnutls (SSA:2008-180-01)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20080520_GNUTLS_ON_SL4_X.NASL
    description Flaws were found in the way GnuTLS handles malicious client connections. A malicious remote client could send a specially crafted request to a service using GnuTLS that could cause the service to crash. (CVE-2008-1948, CVE-2008-1949, CVE-2008-1950) At this time we have not seen any code that is using this exploit. But in Scientific Linux 5 there are some applications, that would be directly vulnerable if/when there is an exploit. Because of the potential threat we are labeling this important.
    last seen 2019-02-21
    modified 2019-01-07
    plugin id 60400
    published 2012-08-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=60400
    title Scientific Linux Security Update : gnutls on SL4.x i386/x86_64
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2008-0489.NASL
    description Updated gnutls packages that fix several security issues are now available for Red Hat Enterprise Linux 5. This update has been rated as having critical security impact by the Red Hat Security Response Team. The GnuTLS Library provides support for cryptographic algorithms and protocols such as TLS. GnuTLS includes libtasn1, a library developed for ASN.1 structures management that includes DER encoding and decoding. Flaws were found in the way GnuTLS handles malicious client connections. A malicious remote client could send a specially crafted request to a service using GnuTLS that could cause the service to crash. (CVE-2008-1948, CVE-2008-1949, CVE-2008-1950) We believe it is possible to leverage the flaw CVE-2008-1948 to execute arbitrary code but have been unable to prove this at the time of releasing this advisory. Red Hat Enterprise Linux 5 includes applications, such as CUPS, that would be directly vulnerable to any such an exploit, however. Consequently, we have assigned it critical severity. Users of GnuTLS are advised to upgrade to these updated packages, which contain a backported patch that corrects these issues.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 43688
    published 2010-01-06
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=43688
    title CentOS 5 : gnutls (CESA-2008:0489)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_GNUTLS-5275.NASL
    description Multiple issues have been fixed in gnutls: CVE-2008-1948 (GNUTLS-SA-2008-1-1), CVE-2008-1949 (GNUTLS-SA-2008-1-2) and CVE-2008-1950 (GNUTLS-SA-2008-1-3) have been assigned to this issue.
    last seen 2019-02-21
    modified 2016-12-22
    plugin id 34214
    published 2008-09-16
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=34214
    title openSUSE 10 Security Update : gnutls (gnutls-5275)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2008-4183.NASL
    description Fixes critical security issue GNUTLS-SA-2008-1 described here: http://lists.gnu.org/archive/html/gnutls-devel/2008-05/msg00060.html All applications and system services which utilize gnutls library must be restarted for the updates to take effect. 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 2016-12-08
    plugin id 32408
    published 2008-05-22
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=32408
    title Fedora 8 : gnutls-1.6.3-3.fc8 (2008-4183)
oval via4
accepted 2013-04-29T04:19:56.991-04:00
class vulnerability
contributors
  • name Aharon Chernin
    organization SCAP.com, LLC
  • name Dragos Prisaca
    organization G2, Inc.
definition_extensions
  • comment The operating system installed on the system is Red Hat Enterprise Linux 4
    oval oval:org.mitre.oval:def:11831
  • comment CentOS Linux 4.x
    oval oval:org.mitre.oval:def:16636
  • comment Oracle Linux 4.x
    oval oval:org.mitre.oval:def:15990
  • comment The operating system installed on the system is Red Hat Enterprise Linux 5
    oval oval:org.mitre.oval:def:11414
  • comment The operating system installed on the system is CentOS Linux 5.x
    oval oval:org.mitre.oval:def:15802
  • comment Oracle Linux 5.x
    oval oval:org.mitre.oval:def:15459
description The _gnutls_recv_client_kx_message function in lib/gnutls_kx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process Client Hello messages within a TLS message after one has already been processed, which allows remote attackers to cause a denial of service (NULL dereference and crash) via a TLS message containing multiple Client Hello messages, aka GNUTLS-SA-2008-1-2.
family unix
id oval:org.mitre.oval:def:9519
status accepted
submitted 2010-07-09T03:56:16-04:00
title The _gnutls_recv_client_kx_message function in lib/gnutls_kx.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 continues to process Client Hello messages within a TLS message after one has already been processed, which allows remote attackers to cause a denial of service (NULL dereference and crash) via a TLS message containing multiple Client Hello messages, aka GNUTLS-SA-2008-1-2.
version 25
redhat via4
advisories
  • rhsa
    id RHSA-2008:0489
  • rhsa
    id RHSA-2008:0492
rpms
  • gnutls-0:1.4.1-3.el5_1
  • gnutls-devel-0:1.4.1-3.el5_1
  • gnutls-utils-0:1.4.1-3.el5_1
  • gnutls-0:1.0.20-4.el4_6
  • gnutls-devel-0:1.0.20-4.el4_6
refmap via4
bid 29292
bugtraq
  • 20080520 Vulnerability Advisory on GnuTLS
  • 20080522 rPSA-2008-0174-1 gnutls
cert-vn VU#252626
confirm
debian DSA-1581
fedora
  • FEDORA-2008-4183
  • FEDORA-2008-4259
  • FEDORA-2008-4274
gentoo GLSA-200805-20
mandriva MDVSA-2008:106
misc http://www.cert.fi/haavoittuvuudet/advisory-gnutls.html
mlist
  • [gnutls-devel] 20080519 GnuTLS 2.2.4 - Security release [GNUTLS-SA-2008-1]
  • [gnutls-devel] 20080519 GnuTLS 2.2.5 - Brown paper bag release
  • [gnutls-devel] 20080519 Re: GnuTLS 2.2.4 - Security release [GNUTLS-SA-2008-1]
  • [oss-security] 20080520 Re: CVE ID request: GNUTLS
sectrack 1020058
secunia
  • 30287
  • 30302
  • 30317
  • 30324
  • 30330
  • 30331
  • 30338
  • 30355
  • 31939
sreason 3902
suse SUSE-SA:2008:046
ubuntu USN-613-1
vupen
  • ADV-2008-1582
  • ADV-2008-1583
xf gnutls-gnutlsrecvclientkxmessage-bo(42530)
Last major update 07-03-2011 - 22:08
Published 21-05-2008 - 09:24
Last modified 11-10-2018 - 16:38
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