CVE-2015-6242
MEDIUM severity · CVSS 4.3 · Improper input validation
4.3CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexity—
Privileges required—
User interaction—
Confidentiality impactNone
Integrity impactNone
Availability impact—
Exploit probability (EPSS)3%
AV:N/AC:M/Au:N/C:N/I:N/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://www.wireshark.org/security/wnpa-sec-2015-22.htmlAdvisory
- 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.debian.org/security/2015/dsa-3367
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.htmlAdvisory
- http://www.securitytracker.com/id/1033272
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11373