CVE-2011-0721

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    CVE-2011-0721

    Published: 19 Feb 2011Last Modified: 10 Apr 2026

    Summary:

    Details: Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local users to add new users or groups to /etc/passwd via the GECOS field.

    References: http://secunia.com/advisories/42505, http://secunia.com/advisories/43345, http://www.debian.org/security/2011/dsa-2164, http://www.ubuntu.com/usn/USN-1065-1, http://www.vupen.com/english/advisories/2011/0396, http://www.vupen.com/english/advisories/2011/0398, http://www.vupen.com/english/advisories/2011/0773, http://osvdb.org/70895, http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.380014, http://www.securityfocus.com/bid/46426, https://exchange.xforce.ibmcloud.com/vulnerabilities/65564

    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