Input validation error in Oracle Solaris and Wireshark - CVE-2015-6242
Published: August 25, 2015 / Updated: August 9, 2020
Vulnerability identifier: #VU40666
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2015-6242
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Oracle
Wireshark.org
Wireshark.org
Affected software:
Oracle Solaris
Wireshark
Oracle Solaris
Wireshark
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
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.
How to mitigate CVE-2015-6242
Install update from vendor's website.
Sources
- 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