{"id":"CVE-2012-5521","aliases":["EUVD-2012-5413","GHSA-r8m3-p659-7pmw","UBUNTU-CVE-2012-5521"],"status":"published","title":"quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal","description":"quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01494,"percentile":0.74314,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-617"],"published":"2019-11-25T13:15:50Z","modified":"2026-06-16T23:46:56Z","affected":[{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"quagga","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.99.24.1-2","0.99.24.1-2ubuntu1","0.99.24.1-2ubuntu1.1","0.99.24.1-2ubuntu1.2","0.99.24.1-2ubuntu1.3","0.99.24.1-2ubuntu1.4","0.99.24.1-2ubuntu1.4+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"quagga","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.1-3","1.1.1-3ubuntu1","1.2.2-1","1.2.2-1ubuntu1","1.2.4-1","1.2.4-1ubuntu0.1~esm1","1.2.4-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"quagga","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.4-4build1","1.2.4-4ubuntu0.1","1.2.4-4ubuntu0.4","1.2.4-4ubuntu0.5"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"quagga","product":"quagga"},{"vendor":"redhat","product":"enterprise_linux"}],"references":[{"url":"https://security-tracker.debian.org/tracker/CVE-2012-5521","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-5521","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory"]},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2012-5521","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory"]},{"url":"https://access.redhat.com/security/cve/cve-2012-5521","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/80096","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.openwall.com/lists/oss-security/2012/11/13/14","tags":["x_refsource_MISC","x_transferred","Mailing List","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/56530","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-5521"},{"url":"https://github.com/advisories/GHSA-r8m3-p659-7pmw"},{"url":"https://ubuntu.com/security/CVE-2012-5521","tags":["report"]},{"url":"http://www.openwall.com/lists/oss-security/2012/11/13/7","tags":["report"]},{"url":"http://www.openwall.com/lists/oss-security/2012/11/13","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2012-5521","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2012-5521","description":"quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal","status":"published","published":"2019-11-25T13:15:50Z","modified":"2024-08-06T21:05:47.304Z","updated_at":"2026-11-02T14:34:49.600255Z"}],"euvd":[{"id":"EUVD-2012-5413","description":"quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal","status":"published","published":"2019-11-25T13:15:50Z","modified":"2024-08-06T21:05:47Z","updated_at":"2026-11-03T01:56:04.919378Z"}],"ghsa":[{"id":"GHSA-r8m3-p659-7pmw","title":"quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal","description":"quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal","status":"published","published":"2022-04-23T00:40:18Z","modified":"2024-04-03T23:52:19Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:55:47.283285Z"}],"nvd":[{"id":"CVE-2012-5521","description":"quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal","status":"published","published":"2019-11-25T14:15:11.147Z","modified":"2026-06-16T23:46:56.367Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":3.3,"vector":"AV:A/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:02:18.043773Z"}],"osv":[{"id":"UBUNTU-CVE-2012-5521","description":"quagga (ospf6d) 0.99.21 has a DoS flaw in the way the ospf6d daemon performs routes removal","status":"published","published":"2019-11-25T14:15:00Z","modified":"2025-10-24T04:44:58Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:06.854805Z"}]}}