CVE-2015-6242

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.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.45%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory wireshark.org
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2015-6242?
CVE-2015-6242 has been scored as a medium severity vulnerability.
How to fix CVE-2015-6242?
To fix CVE-2015-6242, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-6242 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-6242 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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