CVE-2021-29457
Published: 19 April 2021
Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. A heap buffer overflow was found in Exiv2 versions v0.27.3 and earlier. The heap overflow is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to gain code execution, 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.
Priority
Status
Package | Release | Status |
---|---|---|
exiv2 Launchpad, Ubuntu, Debian |
bionic |
Released
(0.25-3.1ubuntu0.18.04.7)
|
focal |
Released
(0.27.2-8ubuntu2.2)
|
|
groovy |
Released
(0.27.3-3ubuntu0.2)
|
|
hirsute |
Released
(0.27.3-3ubuntu1.1)
|
|
impish |
Released
(0.27.3-3ubuntu2)
|
|
jammy |
Released
(0.27.3-3ubuntu2)
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Released
(0.25-2.1ubuntu16.04.7+esm1)
|
|
Patches: upstream: https://github.com/Exiv2/exiv2/pull/1534/commits/13e5a3e02339b746abcaee6408893ca2fd8e289d |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.8 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29457
- https://github.com/Exiv2/exiv2/security/advisories/GHSA-v74w-h496-cgqm
- https://github.com/Exiv2/exiv2/issues/1529
- https://github.com/Exiv2/exiv2/pull/1534
- https://ubuntu.com/security/notices/USN-4941-1
- NVD
- Launchpad
- Debian