CVE-2013-4559

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    CVE-2013-4559

    Published: 20 Nov 2013Last Modified: 16 Apr 2026

    Summary:

    Details: lighttpd before 1.4.33 does not check the return value of the (1) setuid, (2) setgid, or (3) setgroups functions, which might cause lighttpd to run as root if it is restarted and allows remote attackers to gain privileges, as demonstrated by multiple calls to the clone function that cause setuid to fail when the user process limit is reached.

    References: http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2013_02.txt, http://jvn.jp/en/jp/JVN37417423/index.html, http://lists.opensuse.org/opensuse-updates/2014-01/msg00049.html, http://marc.info/?l=bugtraq&m=141576815022399&w=2, http://secunia.com/advisories/55682, http://www.openwall.com/lists/oss-security/2013/11/12/4, https://kc.mcafee.com/corporate/index?page=content&id=SB10310, https://www.debian.org/security/2013/dsa-2795, http://lists.opensuse.org/opensuse-updates/2014-01/msg00049.html, http://www.openwall.com/lists/oss-security/2013/11/12/4, http://marc.info/?l=bugtraq&m=141576815022399&w=2

    Affected packages

    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