CVE-2015-6242

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-08-24 · updated 2026-06-17
Weakness: CWE-20

Description

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.

Affected products

Oracle Corporation Solaris Operating System: 11.3
Wireshark Foundation Wireshark: 1.12.0, 1.12.1, 1.12.2, 1.12.3, 1.12.4, 1.12.5 (+1)

References

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.html
http://www.securitytracker.com/id/1033272
http://www.wireshark.org/security/wnpa-sec-2015-22.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11373
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=eaf1aad31e7c0a4908c20a42ae118c4dc8d474b6
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

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