Vulnerability Details : CVE-2018-6836
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.
Vulnerability category: Denial of service
Products affected by CVE-2018-6836
- cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-6836
1.18%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 85 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-6836
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2018-6836
-
The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-6836
-
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=28960d79cca262ac6b974f339697b299a1e28fef
code.wireshark Code Review - wireshark.git/commitIssue Tracking;Patch
-
https://code.wireshark.org/review/#/c/25660/
code.wireshark Code ReviewIssue Tracking;Patch
-
https://code.wireshark.org/review/#/c/25660/2/wiretap/netmon.c
code.wireshark Code ReviewPatch
-
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14397
14397 – Illegal memory access from running free() on an invalid address triggered by parsing crafted pcapExploit;Issue Tracking;Third Party Advisory
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