{"id":"USN-4851-1","summary":"libsolv vulnerabilities","details":"It was discovered that Libsolv incorrectly handled certain malformed input.\nAn attacker could use this issue to cause Libsolv to crash, resulting in a\ndenial of service.","modified":"2026-05-20T16:03:07.267919120Z","published":"2021-03-15T22:36:33Z","related":["UBUNTU-CVE-2018-20532","UBUNTU-CVE-2018-20533","UBUNTU-CVE-2018-20534"],"upstream":["CVE-2018-20532","CVE-2018-20533","CVE-2018-20534","UBUNTU-CVE-2018-20532","UBUNTU-CVE-2018-20533","UBUNTU-CVE-2018-20534"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4851-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-20532"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-20533"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-20534"}],"affected":[{"package":{"name":"libsolv","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libsolv?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.11-1.1ubuntu0.1~esm1"}]}],"versions":["0.6.11-1","0.6.11-1build1","0.6.11-1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-solv","binary_version":"0.6.11-1.1ubuntu0.1~esm1"},{"binary_name":"libsolvext0","binary_version":"0.6.11-1.1ubuntu0.1~esm1"},{"binary_name":"libsolv-tools","binary_version":"0.6.11-1.1ubuntu0.1~esm1"},{"binary_name":"python-solv","binary_version":"0.6.11-1.1ubuntu0.1~esm1"},{"binary_name":"libsolv-perl","binary_version":"0.6.11-1.1ubuntu0.1~esm1"},{"binary_name":"libsolv0","binary_version":"0.6.11-1.1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4851-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[]}}},{"package":{"name":"libsolv","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libsolv?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.30-1ubuntu0.1~esm1"}]}],"versions":["0.6.28-2build1","0.6.30-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libsolv-perl","binary_version":"0.6.30-1ubuntu0.1~esm1"},{"binary_name":"libsolv-tools","binary_version":"0.6.30-1ubuntu0.1~esm1"},{"binary_name":"libsolv0","binary_version":"0.6.30-1ubuntu0.1~esm1"},{"binary_name":"libsolvext0","binary_version":"0.6.30-1ubuntu0.1~esm1"},{"binary_name":"python-solv","binary_version":"0.6.30-1ubuntu0.1~esm1"},{"binary_name":"python3-solv","binary_version":"0.6.30-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4851-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2018-20532"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2018-20533"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2018-20534"}]}}}],"schema_version":"1.7.5"}