{"id":"CVE-2021-29457","details":"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.","modified":"2026-04-16T04:31:02.926088837Z","published":"2021-04-19T19:15:17.920Z","related":["ALSA-2021:4173","GHSA-v74w-h496-cgqm","SUSE-SU-2022:3889-1","SUSE-SU-2022:4252-1","openSUSE-SU-2024:12381-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2XQT5F5IINTDYDAFGVGQZ7PMMLG7I5ZZ/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P2A5GMJEXQ5Q76JK6F6VKK5JYCLVFGKN/"},{"type":"ADVISORY","url":"https://github.com/Exiv2/exiv2/security/advisories/GHSA-v74w-h496-cgqm"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/08/msg00028.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202312-06"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4958"},{"type":"FIX","url":"https://github.com/Exiv2/exiv2/issues/1529"},{"type":"FIX","url":"https://github.com/Exiv2/exiv2/pull/1534"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/exiv2/exiv2","events":[{"introduced":"0"},{"fixed":"15098f4ef50cc721ad0018218acab2ff06e60beb"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"0.27.4"}]}}],"versions":["0.27","0.27-RC2","0.27-RC3","0.27.1","v0.10","v0.11","v0.12","v0.13","v0.14","v0.15","v0.16","v0.16-pre1","v0.17","v0.17.1","v0.18","v0.18-pre1","v0.18-pre2","v0.18.1","v0.18.2","v0.19","v0.20","v0.21","v0.21.1","v0.22","v0.23","v0.23.1","v0.24","v0.25","v0.26","v0.27-RC1","v0.27.0","v0.27.1","v0.27.1-RC1","v0.27.2","v0.27.2-RC1","v0.27.2-RC2","v0.27.2-RC3","v0.27.3","v0.27.3-RC1","v0.27.3-RC2","v0.27.4-RC1","v0.27.4-RC2","v0.27.4-RC3","v0.3","v0.4","v0.5","v0.6","v0.6.1","v0.6.2","v0.7","v0.8","v0.9","v0.9.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29457.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"33"}]},{"events":[{"introduced":"0"},{"last_affected":"34"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}