{"id":"CVE-2013-4463","aliases":["GHSA-5644-2v3h-5w4x","PYSEC-2026-865"],"title":"OpenStack Nova denial of service through compressed disk images","summary":"OpenStack Nova denial of service through compressed disk images","severity":"low","vendor":"nova","product":"nova","ecosystem":"pip","affected":["nova < 12.0.0a0"],"patched":["nova 12.0.0a0"],"published":"2022-05-17","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-5644-2v3h-5w4x","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4463"},{"url":"https://bugs.launchpad.net/nova/+bug/1206081"},{"url":"https://github.com/openstack/nova"},{"url":"http://github.com/openstack/nova/commit/3cdfe894ab58f7b91bf7fb690fc5bc724e44066f"},{"url":"http://github.com/openstack/nova/commit/f6810be4ae1a6c93e7d8017ee67d5344dfdf4a30"},{"url":"http://rhn.redhat.com/errata/RHSA-2014-0112.html"},{"url":"http://www.openwall.com/lists/oss-security/2013/10/31/3"},{"url":"http://www.ubuntu.com/usn/USN-2247-1"}],"tags":["osv","pip"],"epss":0.00372,"epssPercentile":0.31061,"ingestedAt":"2026-07-08T18:25:45.789Z","slug":"CVE-2013-4463","body":"## Overview\n\nOpenStack Compute (Nova) Folsom, Grizzly, and Havana does not properly verify the virtual size of a QCOW2 image, which allows local users to cause a denial of service (host file system disk consumption) via a compressed QCOW2 image.  NOTE: this issue is due to an incomplete fix for CVE-2013-2096.\n\n## Affected packages\n\n- `nova < 12.0.0a0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `nova 12.0.0a0`","depth":"sunlit","depthScore":14,"depthScoreParts":{"impact":13.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}