CVE-2017-18120

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-02-02 · updated 2026-06-17
Weakness: CWE-415

Description

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.

Affected products

Lcdf Gifsicle: 1.90

References

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878739
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=881120
https://github.com/kohler/gifsicle/commit/118a46090c50829dc543179019e6140e1235f909
https://github.com/kohler/gifsicle/issues/117
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=878739
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=881120
https://github.com/kohler/gifsicle/commit/118a46090c50829dc543179019e6140e1235f909
https://github.com/kohler/gifsicle/issues/117

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