ID CVE-2013-0157
Summary (a) mount and (b) umount in util-linux 2.14.1, 2.17.2, and probably other versions allow local users to determine the existence of restricted directories by (1) using the --guess-fstype command-line option or (2) attempting to mount a non-existent device, which generates different error messages depending on whether the directory exists.
References
Vulnerable Configurations
  • kernel util-linux 2.14.1
    cpe:2.3:a:kernel:util-linux:2.14.1
  • kernel util-linux 2.17.2
    cpe:2.3:a:kernel:util-linux:2.17.2
CVSS
Base: 2.1 (as of 22-01-2014 - 15:26)
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
LOCAL LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
nessus via4
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2013-0517.NASL
    description From Red Hat Security Advisory 2013:0517 : Updated util-linux-ng packages that fix one security issue, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. The util-linux-ng packages contain a large variety of low-level system utilities that are necessary for a Linux operating system to function. An information disclosure flaw was found in the way the mount command reported errors. A local attacker could use this flaw to determine the existence of files and directories they do not have access to. (CVE-2013-0157) These updated util-linux-ng packages include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.4 Technical Notes, linked to in the References, for information on the most significant of these changes. All users of util-linux-ng are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements.
    last seen 2019-02-21
    modified 2019-01-02
    plugin id 68754
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=68754
    title Oracle Linux 6 : util-linux-ng (ELSA-2013-0517)
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201405-15.NASL
    description The remote host is affected by the vulnerability described in GLSA-201405-15 (util-linux: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in util-linux. Please review the CVE identifiers referenced below for details. Impact : A local attacker may be able to cause a Denial of Service condition, trigger corruption of /etc/mtab, obtain sensitive information, or have other unspecified impact. Workaround : There is no known workaround at this time.
    last seen 2019-02-21
    modified 2018-12-05
    plugin id 74058
    published 2014-05-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=74058
    title GLSA-201405-15 : util-linux: Multiple vulnerabilities
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2013-0517.NASL
    description Updated util-linux-ng packages that fix one security issue, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. The util-linux-ng packages contain a large variety of low-level system utilities that are necessary for a Linux operating system to function. An information disclosure flaw was found in the way the mount command reported errors. A local attacker could use this flaw to determine the existence of files and directories they do not have access to. (CVE-2013-0157) These updated util-linux-ng packages include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.4 Technical Notes, linked to in the References, for information on the most significant of these changes. All users of util-linux-ng are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements.
    last seen 2019-02-21
    modified 2019-01-02
    plugin id 64765
    published 2013-02-21
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=64765
    title RHEL 6 : util-linux-ng (RHSA-2013:0517)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2013-0517.NASL
    description Updated util-linux-ng packages that fix one security issue, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. The util-linux-ng packages contain a large variety of low-level system utilities that are necessary for a Linux operating system to function. An information disclosure flaw was found in the way the mount command reported errors. A local attacker could use this flaw to determine the existence of files and directories they do not have access to. (CVE-2013-0157) These updated util-linux-ng packages include numerous bug fixes and enhancements. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 6.4 Technical Notes, linked to in the References, for information on the most significant of these changes. All users of util-linux-ng are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add these enhancements.
    last seen 2019-02-21
    modified 2018-11-28
    plugin id 65149
    published 2013-03-10
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=65149
    title CentOS 6 : util-linux-ng (CESA-2013:0517)
  • NASL family Mandriva Local Security Checks
    NASL id MANDRIVA_MDVSA-2013-154.NASL
    description A vulnerability has been found and corrected in util-linux : An information disclosure flaw was found in the way the mount command reported errors. A local attacker could use this flaw to determine the existence of files and directories they do not have access to (CVE-2013-0157). Additionally for Mandriva Enterprise Server 5 a patch was added to support a new --no-canonicalize switch for mount to support the fix for CVE-2010-3879 in fuse. The updated packages have been patched to correct these issues.
    last seen 2019-02-21
    modified 2019-01-02
    plugin id 66265
    published 2013-04-30
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=66265
    title Mandriva Linux Security Advisory : util-linux (MDVSA-2013:154)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20130221_UTIL_LINUX_NG_ON_SL6_X.NASL
    description An information disclosure flaw was found in the way the mount command reported errors. A local attacker could use this flaw to determine the existence of files and directories they do not have access to. (CVE-2013-0157)
    last seen 2019-02-21
    modified 2018-12-31
    plugin id 65017
    published 2013-03-05
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=65017
    title Scientific Linux Security Update : util-linux-ng on SL6.x i386/x86_64
redhat via4
advisories
bugzilla
id 892330
title CVE-2013-0157 util-linux: mount folder existence information disclosure
oval
AND
  • OR
    • comment Red Hat Enterprise Linux 6 Client is installed
      oval oval:com.redhat.rhsa:tst:20100842001
    • comment Red Hat Enterprise Linux 6 Server is installed
      oval oval:com.redhat.rhsa:tst:20100842002
    • comment Red Hat Enterprise Linux 6 Workstation is installed
      oval oval:com.redhat.rhsa:tst:20100842003
    • comment Red Hat Enterprise Linux 6 ComputeNode is installed
      oval oval:com.redhat.rhsa:tst:20100842004
  • OR
    • AND
      • comment libblkid is earlier than 0:2.17.2-12.9.el6
        oval oval:com.redhat.rhsa:tst:20130517009
      • comment libblkid is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111691008
    • AND
      • comment libblkid-devel is earlier than 0:2.17.2-12.9.el6
        oval oval:com.redhat.rhsa:tst:20130517013
      • comment libblkid-devel is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111691010
    • AND
      • comment libuuid is earlier than 0:2.17.2-12.9.el6
        oval oval:com.redhat.rhsa:tst:20130517007
      • comment libuuid is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111691014
    • AND
      • comment libuuid-devel is earlier than 0:2.17.2-12.9.el6
        oval oval:com.redhat.rhsa:tst:20130517011
      • comment libuuid-devel is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111691012
    • AND
      • comment util-linux-ng is earlier than 0:2.17.2-12.9.el6
        oval oval:com.redhat.rhsa:tst:20130517005
      • comment util-linux-ng is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111691006
    • AND
      • comment uuidd is earlier than 0:2.17.2-12.9.el6
        oval oval:com.redhat.rhsa:tst:20130517015
      • comment uuidd is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20111691016
rhsa
id RHSA-2013:0517
released 2013-02-21
severity Low
title RHSA-2013:0517: util-linux-ng security, bug fix and enhancement update (Low)
rpms
  • libblkid-0:2.17.2-12.9.el6
  • libblkid-devel-0:2.17.2-12.9.el6
  • libuuid-0:2.17.2-12.9.el6
  • libuuid-devel-0:2.17.2-12.9.el6
  • util-linux-ng-0:2.17.2-12.9.el6
  • uuidd-0:2.17.2-12.9.el6
refmap via4
confirm
mandriva MDVSA-2013:154
mlist [oss-security] 20130106 Re: CVE request: mount/umount leak information about existence of folders
osvdb 88953
Last major update 22-01-2014 - 15:26
Published 21-01-2014 - 13:55
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