CVE-2021-32815

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The assertion failure 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 modifying the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as fi. ### Patches The bug is fixed in version v0.27.5. ### References Regression test and bug fix: #1739 ### For more information Please see our security policy ↗ for information about Exiv2 security.

To exploit this issue, an attacker needs to convince a user to process a specially crafted image file, specifically to modify the metadata of an image, an uncommon operation that requires an extra command line option (fi). Additionally, this issue can lead to an assertion failure and cause a denial of service with no other security impact. Due to these reasons, this vulnerability has been rated with a low severity.

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.