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    CVE-2016-0634

    The expansion of '\h' in the prompt string in bash 4.3 allows remote authenticated users to execute arbitrary code via shell metacharacters placed in 'hostname' of a machine.

    Published:Oct 16, 2015
    Last Modified:Apr 20, 2025
    EPS:Aug 28, 2017
    EPSS Score:0.03053
    CVSS Score:7.5

    Affected Products

    Vendor
    Gnu
    Product
    Bash
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2019-18276 (CVSS 7.8) — An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash …
    CVE-2012-6711 (CVSS 7) — A heap-based buffer overflow exists in GNU Bash before 4.3 when wide characters, not supported by the current …
    CVE-2019-9924 (CVSS 7.8) — rbash in Bash before 4.4-beta2 did not prevent the shell user from modifying BASH_CMDS, thus allowing the user…
    CVE-2017-5932 (CVSS 7.8) — The path autocompletion feature in Bash 4.4 allows local users to gain privileges via a crafted filename start…
    CVE-2016-9401 (CVSS 5.5) — popd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted a…
    CVE-2016-7543 (CVSS 8.4) — Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS an…
    CVE-2014-6278 (CVSS 8.8) — GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment vari…
    CVE-2014-6277 (CVSS 10) — GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment vari…
    CVE-2014-7187 (CVSS 10) — Off-by-one error in the read_token_word function in parse.y in GNU Bash through 4.3 bash43-026 allows remote a…

    References

    http://rhn.redhat.com/errata/RHSA-2017-0725.html
    http://www.openwall.com/lists/oss-security/2016/09/16/12
    http://www.openwall.com/lists/oss-security/2016/09/16/8
    http://www.openwall.com/lists/oss-security/2016/09/18/11
    http://www.openwall.com/lists/oss-security/2016/09/19/7
    http://www.openwall.com/lists/oss-security/2016/09/20/1
    http://www.openwall.com/lists/oss-security/2016/09/27/9
    http://www.openwall.com/lists/oss-security/2016/09/29/27
    http://www.openwall.com/lists/oss-security/2016/10/07/6
    http://www.openwall.com/lists/oss-security/2016/10/10/3
    http://www.openwall.com/lists/oss-security/2016/10/10/4
    http://www.securityfocus.com/bid/92999
    https://access.redhat.com/errata/RHSA-2017:1931
    https://bugzilla.redhat.com/show_bug.cgi?id=1377613
    https://security.gentoo.org/glsa/201612-39
    http://rhn.redhat.com/errata/RHSA-2017-0725.html
    http://www.openwall.com/lists/oss-security/2016/09/16/12
    http://www.openwall.com/lists/oss-security/2016/09/16/8
    http://www.openwall.com/lists/oss-security/2016/09/18/11
    http://www.openwall.com/lists/oss-security/2016/09/19/7
    http://www.openwall.com/lists/oss-security/2016/09/20/1
    http://www.openwall.com/lists/oss-security/2016/09/27/9
    http://www.openwall.com/lists/oss-security/2016/09/29/27
    http://www.openwall.com/lists/oss-security/2016/10/07/6
    http://www.openwall.com/lists/oss-security/2016/10/10/3
    http://www.openwall.com/lists/oss-security/2016/10/10/4
    http://www.securityfocus.com/bid/92999
    https://access.redhat.com/errata/RHSA-2017:1931
    https://bugzilla.redhat.com/show_bug.cgi?id=1377613
    https://security.gentoo.org/glsa/201612-39

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High