{"id":"UBUNTU-CVE-2021-29473","details":"Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. 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. Please see our security policy for information about Exiv2 security.","modified":"2026-04-22T12:50:48.852342Z","published":"2021-04-26T19:15:00Z","related":["USN-4964-1"],"upstream":["CVE-2021-29473"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-29473"},{"type":"REPORT","url":"https://github.com/Exiv2/exiv2/security/advisories/GHSA-7569-phvm-vwc2"},{"type":"REPORT","url":"https://github.com/Exiv2/exiv2/pull/1587"},{"type":"REPORT","url":"https://github.com/Exiv2/exiv2/commit/e6a0982f7cd9282052b6e3485a458d60629ffa0b"},{"type":"REPORT","url":"https://github.com/Exiv2/exiv2/commit/f0ff11f044b2c8ddf4792415beb91fd815c633a1"},{"type":"REPORT","url":"https://github.com/Exiv2/exiv2/security/policy"},{"type":"REPORT","url":"https://github.com/github/advisory-review/pull/1587"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4964-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-29473"}],"affected":[{"package":{"name":"exiv2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/exiv2@0.25-2.1ubuntu16.04.7+esm2?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.25-2.1ubuntu16.04.7+esm2"}]}],"versions":["0.25-1ubuntu1","0.25-2.1","0.25-2.1ubuntu16.04.1","0.25-2.1ubuntu16.04.2","0.25-2.1ubuntu16.04.3","0.25-2.1ubuntu16.04.4","0.25-2.1ubuntu16.04.5","0.25-2.1ubuntu16.04.6","0.25-2.1ubuntu16.04.7+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"exiv2","binary_version":"0.25-2.1ubuntu16.04.7+esm2"},{"binary_name":"libexiv2-14","binary_version":"0.25-2.1ubuntu16.04.7+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29473.json"}},{"package":{"name":"exiv2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/exiv2@0.25-3.1ubuntu0.18.04.9?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.25-3.1ubuntu0.18.04.9"}]}],"versions":["0.25-3.1","0.25-3.1ubuntu0.18.04.1","0.25-3.1ubuntu0.18.04.2","0.25-3.1ubuntu0.18.04.3","0.25-3.1ubuntu0.18.04.4","0.25-3.1ubuntu0.18.04.5","0.25-3.1ubuntu0.18.04.7"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"0.25-3.1ubuntu0.18.04.9","binary_name":"exiv2"},{"binary_name":"libexiv2-14","binary_version":"0.25-3.1ubuntu0.18.04.9"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29473.json"}},{"package":{"name":"exiv2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/exiv2@0.27.2-8ubuntu2.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.27.2-8ubuntu2.4"}]}],"versions":["0.25-4ubuntu2","0.25-4ubuntu3","0.27.2-8ubuntu2","0.27.2-8ubuntu2.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"exiv2","binary_version":"0.27.2-8ubuntu2.4"},{"binary_name":"libexiv2-27","binary_version":"0.27.2-8ubuntu2.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29473.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}