PublicDateAtUSN: 2021-04-19 19:15:00 UTC
Candidate: CVE-2021-29457
PublicDate: 2021-04-19 19:15:00 UTC
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
Description:
 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.
Ubuntu-Description:
Notes:
Mitigation:
Bugs:
 https://bugs.launchpad.net/ubuntu/+source/exiv2/+bug/1923479
Priority: medium
Discovered-by:
Assigned-to: leosilva
CVSS:
 nvd: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H [7.8 HIGH]


Patches_exiv2:
 upstream: https://github.com/Exiv2/exiv2/pull/1534/commits/13e5a3e02339b746abcaee6408893ca2fd8e289d
upstream_exiv2: needs-triage
precise/esm_exiv2: DNE
trusty_exiv2: ignored (out of standard support)
trusty/esm_exiv2: DNE
xenial_exiv2: ignored (end of standard support, was needed)
esm-infra/xenial_exiv2: released (0.25-2.1ubuntu16.04.7+esm1)
bionic_exiv2: released (0.25-3.1ubuntu0.18.04.7)
focal_exiv2: released (0.27.2-8ubuntu2.2)
groovy_exiv2: released (0.27.3-3ubuntu0.2)
hirsute_exiv2: released (0.27.3-3ubuntu1.1)
impish_exiv2: released (0.27.3-3ubuntu2)
jammy_exiv2: released (0.27.3-3ubuntu2)
devel_exiv2: released (0.27.3-3ubuntu2)