CVE-2009-0127

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    CVE-2009-0127

    Published: 15 Jan 2009Last Modified: 10 Apr 2026

    Summary:

    Details: M2Crypto does not properly check the return value from the OpenSSL EVP_VerifyFinal, DSA_verify, ECDSA_verify, DSA_do_verify, and ECDSA_do_verify functions, which might allow remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077. NOTE: a Linux vendor disputes the relevance of this report to the M2Crypto product because "these functions are not used anywhere in m2crypto.

    References: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511515, http://openwall.com/lists/oss-security/2009/01/12/4, https://bugzilla.redhat.com/show_bug.cgi?id=479676, https://bugzilla.redhat.com/show_bug.cgi?id=479676

    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-2009-0127 | CVE-DB