High severity · published Jun 14, 2022
CVE-2021-40633
A memory leak (out-of-memory) in gif2rgb in util/gif2rgb.c in giflib 5.1.4 allows remote attackers trigger an out of memory exception or denial of service via a gif format file
8.8
CVSS
1.7%
EPSS
No
On KEV
Description
A memory leak (out-of-memory) in gif2rgb in util/gif2rgb.c in giflib 5.1.4 allows remote attackers trigger an out of memory exception or denial of service via a gif format file.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
Giflib · Giflib Project
5.1.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-40633
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-40633
Exploit
https://sourceforge.net/p/giflib/bugs/157/
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