CVE-2021-29463: exiv2 Out-of-bounds Read

Vulnerability summary

CVE-2021-29463 is a medium (CVSS 5.5) Out-of-bounds Read vulnerability in exiv2. EPSS estimates a 1.12% chance of exploitation in the next 30 days, higher than 65.6% of scored vulnerabilities.

Timeline

1. 30-04-2021
   PublishedVulnerability first disclosed.
2. 15-10-2024
   Last modifiedVulnerability information updated.

Description

Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. The out-of-bounds read is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service by crashing Exiv2, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing 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 `insert`. The bug is fixed in version v0.27.4.

• CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.