CVE-2015-6242

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    CVE-2015-6242

    Published: 24 Aug 2015Last Modified: 10 Apr 2026

    Summary:

    Details: The wmem_block_split_free_chunk function in epan/wmem/wmem_allocator_block.c in the wmem block allocator in the memory manager in Wireshark 1.12.x before 1.12.7 does not properly consider a certain case of multiple realloc operations that restore a memory chunk to its original size, which allows remote attackers to cause a denial of service (incorrect free operation and application crash) via a crafted packet.

    References: http://www.debian.org/security/2015/dsa-3367, http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html, http://www.wireshark.org/security/wnpa-sec-2015-22.html, https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11373, http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168837.html, http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165509.html, http://lists.opensuse.org/opensuse-updates/2015-10/msg00053.html, http://www.securitytracker.com/id/1033272, https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=eaf1aad31e7c0a4908c20a42ae118c4dc8d474b6

    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