CVE-2021-29470
Published: 23 April 2021
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.
Priority
Status
Package | Release | Status |
---|---|---|
exiv2 Launchpad, Ubuntu, Debian |
impish |
Released
(0.27.3-3ubuntu2)
|
jammy |
Released
(0.27.3-3ubuntu2)
|
|
focal |
Released
(0.27.2-8ubuntu2.2)
|
|
groovy |
Released
(0.27.3-3ubuntu0.2)
|
|
hirsute |
Released
(0.27.3-3ubuntu1.1)
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
bionic |
Not vulnerable
(code not present)
|
|
xenial |
Not vulnerable
(code not present)
|
|
Patches: upstream: https://github.com/Exiv2/exiv2/pull/1581/commits/6527e4f5979ced22d509e27d87d51287046f2008 (regression test) upstream: https://github.com/Exiv2/exiv2/pull/1581/commits/6628a69c036df2aa036290e6cd71767c159c79ed (fix) |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | Required |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |