PublicDateAtUSN: 2021-04-23 19:15:00 UTC
Candidate: CVE-2021-29470
PublicDate: 2021-04-23 19:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29470
 https://github.com/Exiv2/exiv2/security/advisories/GHSA-8949-hhfh-j7rj
 https://github.com/Exiv2/exiv2/pull/1581
 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. 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.
Ubuntu-Description:
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by:
Assigned-to: leosilva
CVSS:
 nvd: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H [6.5 MEDIUM]


Patches_exiv2:
 upstream: https://github.com/Exiv2/exiv2/pull/1581/commits/6527e4f5979ced22d509e27d87d51287046f2008 (regression test)
 upstream: https://github.com/Exiv2/exiv2/pull/1581/commits/6628a69c036df2aa036290e6cd71767c159c79ed (fix)
upstream_exiv2: needs-triage
precise/esm_exiv2: DNE
trusty_exiv2: ignored (out of standard support)
trusty/esm_exiv2: DNE
xenial_exiv2: not-affected (code not present)
esm-infra/xenial_exiv2: not-affected (code not present)
bionic_exiv2: not-affected (code not present)
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)