CVE-2013-4208

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    CVE-2013-4208

    Published: 19 Aug 2013Last Modified: 16 Apr 2026

    Summary:

    Details: The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.

    References: http://secunia.com/advisories/54379, http://secunia.com/advisories/54533, http://www.debian.org/security/2013/dsa-2736, http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html, http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/private-key-not-wiped.html, http://www.openwall.com/lists/oss-security/2013/08/06/11

    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