CVE-2021-34335
exiv2: DoS due to FPE in Exiv2::Internal::resolveLens0xffff
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 8, 2021
Updated · April 17, 2026
Description
Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. A floating point exception (FPE) due to an integer divide by zero was found in Exiv2 versions v0.27.4 and earlier. The FPE is triggered when Exiv2 is used to print 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 printing the interpreted (translated) data, which is a less frequently used Exiv2 operation that requires an extra command line option (-p t or -P t). The bug is fixed in version v0.27.5.
Statement
To exploit this issue, an attacker needs to convince a user to process a specially crafted image file, specifically to print the interpreted (translated) data, an uncommon operation that requires an extra command line option (-p t or -P t). Additionally, this flaw can lead to a floating point exception (FPE) and cause a denial of service with no other security impact. Due to these reasons, this vulnerability has been rated with a low severity.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-369 · Divide By Zero