Vulnerability Details : CVE-2017-18120
A double-free bug in the read_gif function in gifread.c in gifsicle 1.90 allows a remote attacker to cause a denial-of-service attack or unspecified other impact via a maliciously crafted file, because last_name is mishandled, a different vulnerability than CVE-2017-1000421.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2017-18120
- cpe:2.3:a:lcdf:gifsicle:1.90:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-18120
0.63%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 79 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-18120
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2017-18120
-
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-18120
-
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=881120
#881120 - gifsicle: use after free while running gifsicle - Debian Bug report logsMailing List;Third Party Advisory
-
https://github.com/kohler/gifsicle/commit/118a46090c50829dc543179019e6140e1235f909
gif_read: Set last_name = NULL unconditionally. · kohler/gifsicle@118a460 · GitHubPatch;Third Party Advisory
-
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878739
#878739 - gifsicle: double-free bug when running gifdiff - Debian Bug report logsMailing List;Third Party Advisory
-
https://github.com/kohler/gifsicle/issues/117
denial-of-service attack · Issue #117 · kohler/gifsicle · GitHubThird Party Advisory
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