CVE-2018-11358

In Wireshark 2.6.0, 2.4.0 to 2.4.6, and 2.2.0 to 2.2.14, the Q.931 dissector could crash. This was addressed in epan/dissectors/packet-q931.c by avoiding a use-after-free after a malformed packet prevented certain cleanup.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name	Vendor	Start Version	End Version
Wireshark	Wireshark	2.2.0 (including)	2.2.14 (including)
Wireshark	Wireshark	2.4.0 (including)	2.4.6 (including)
Wireshark	Wireshark	2.6.0 (including)	2.6.0 (including)
Wireshark	Ubuntu	artful	*
Wireshark	Ubuntu	bionic	*
Wireshark	Ubuntu	esm-apps/bionic	*
Wireshark	Ubuntu	esm-apps/xenial	*
Wireshark	Ubuntu	esm-infra-legacy/trusty	*
Wireshark	Ubuntu	trusty	*
Wireshark	Ubuntu	trusty/esm	*
Wireshark	Ubuntu	xenial	*

NVD	https://nvd.nist.gov/vuln/detail/CVE-2018-11358
CWE	https://cwe.mitre.org/data/definitions/416.html

Use After Free

Weakness

Affected Software

Potential Mitigations

References