CVE-2018-6836 — Release of Invalid Pointer or Reference in Wireshark

CWE-763 — Release of Invalid Pointer or ReferenceCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer7 documents6 sources
Severity
9.8CRITICALNVD
EPSS
0.3%
top 45.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
WiresharkDebian Wireshark
Timeline
PublishedFeb 8
Latest updateMay 13

Description

The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through 2.4.4 performs a free operation on an uninitialized memory address, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages3 packages

▶Ubuntuwireshark/wireshark< 2.6.3-1~ubuntu14.04.1+2

Patches

Patch: code.wireshark.org ↗Patch: code.wireshark.org ↗Patch: code.wireshark.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-79gq-68m6-v3vg: The netmonrec_comment_destroy function in wiretap/netmon↗2022-05-13
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OSV
CVE-2018-6836: The netmonrec_comment_destroy function in wiretap/netmon↗2018-02-08
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📋Vendor Advisories

2
Red Hat
wireshark: free operation on an uninitialized memory address in wiretap/netmon.c↗2018-02-05
▶
Debian
CVE-2018-6836: wireshark - The netmonrec_comment_destroy function in wiretap/netmon.c in Wireshark through ...↗2018
▶

💬Community

2
Bugzilla
CVE-2018-6836 wireshark: free operation on an uninitialized memory address in wiretap/netmon.c [fedora-all]↗2018-02-08
▶
Bugzilla
CVE-2018-6836 wireshark: free operation on an uninitialized memory address in wiretap/netmon.c↗2018-02-08
▶