CVE-2021-37623

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An infinite loop was found in Exiv2 versions v0.27.4 and earlier. The infinite loop is triggered when Exiv2 is used to modify the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when deleting the IPTC data, which is a less frequently used Exiv2 operation that requires an extra command line option (-d I rm). The bug is fixed in version v0.27.5.

Weakness

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

Affected Software

Name	Vendor	Start Version	End Version
Exiv2	Exiv2	*	0.27.4 (including)
Exiv2	Ubuntu	devel	*
Exiv2	Ubuntu	esm-infra/focal	*
Exiv2	Ubuntu	focal	*
Exiv2	Ubuntu	hirsute	*
Exiv2	Ubuntu	impish	*
Exiv2	Ubuntu	jammy	*
Exiv2	Ubuntu	trusty	*
Exiv2	Ubuntu	xenial	*

NVD	https://nvd.nist.gov/vuln/detail/CVE-2021-37623
CWE	https://cwe.mitre.org/data/definitions/835.html

Loop with Unreachable Exit Condition ('Infinite Loop')

Weakness

Affected Software

References