CVE-2012-6706

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    CVE-2012-6706

    Published: 22 Jun 2017Last Modified: 16 Apr 2026

    Summary:

    Details: A VMSF_DELTA memory corruption was discovered in unrar before 5.5.5, as used in Sophos Anti-Virus Threat Detection Engine before 3.37.2 and other products, that can lead to arbitrary code execution. An integer overflow can be caused in DataSize+CurChannel. The result is a negative value of the "DestPos" variable, which allows the attacker to write out of bounds when setting Mem[DestPos].

    References: http://securitytracker.com/id?1027725, http://telussecuritylabs.com/threats/show/TSL20121207-01, https://bugs.chromium.org/p/project-zero/issues/detail?id=1286, https://community.sophos.com/kb/en-us/118424#six, https://lock.cmpxchg8b.com/sophailv2.pdf, https://nakedsecurity.sophos.com/2012/11/05/tavis-ormandy-sophos/, https://security.gentoo.org/glsa/201708-05, https://security.gentoo.org/glsa/201709-24, https://security.gentoo.org/glsa/201804-16, https://bugs.chromium.org/p/project-zero/issues/detail?id=1286, https://kc.mcafee.com/corporate/index?page=content&id=SB10205

    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
    CVE-2012-6706 | CVE-DB