CVE-2015-6242

MEDIUM

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.

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;a=commit;h=eaf1aad31e7c0a4908c20a42ae118c4dc8d474b6

Details

Source: MITRE

Published: 2015-08-24

Updated: 2016-12-24

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM