Headline
CVE-2021-37622: Denial of service due to infinite loop in JpegBase::printStructure (#1)
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.
Impact
An infinite loop was found in Exiv2 versions v0.27.4 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. 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).
Patches
The bug is fixed in version v0.27.5.
References
Regression test and bug fix: #1788
For more information
Please see our security policy for information about Exiv2 security.
Related news
Gentoo Linux Security Advisory 202312-6 - Multiple vulnerabilities have been discovered in Exiv2, the worst of which can lead to remote code execution. Versions greater than or equal to 0.28.1 are affected.