{"id":"USN-5194-1","summary":"olm vulnerability","details":"Denis Kasak discovered that Olm was not verifying the length of input being\nprocessed by the olm_pk_decrypt module, which introduced a stack-based buffer\noverflow vulnerability to the library. An attacker could use this to\ncause a denial of service (application crash) or possibly execute arbitrary code.\n","modified":"2026-04-22T10:20:02.856443Z","published":"2021-12-15T13:45:51Z","related":["UBUNTU-CVE-2021-34813"],"upstream":["CVE-2021-34813","UBUNTU-CVE-2021-34813"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5194-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-34813"}],"affected":[{"package":{"name":"olm","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/olm@3.1.3+dfsg-2ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.3+dfsg-2ubuntu0.1~esm1"}]}],"versions":["3.1.3+dfsg-2","3.1.3+dfsg-2build1","3.1.3+dfsg-2build2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.1.3+dfsg-2ubuntu0.1~esm1","binary_name":"libolm3"},{"binary_version":"3.1.3+dfsg-2ubuntu0.1~esm1","binary_name":"python3-olm"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5194-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2021-34813"}]}}}],"schema_version":"1.7.5"}