{"id":"CVE-2013-4559","url":"https://www.cyber-defence.io/tools/cve/CVE-2013-4559","generatedAt":"2026-10-27T19:52:42.934Z","title":"lighttpd before 1.4.33 does not check the return value of the (1) setuid, (2) setgid, or (3) setgroups functions, which might cause lighttpd to run as root if it is restarted and allows remote attackers to gain privileges, as demonstrated by multiple…","description":"lighttpd before 1.4.33 does not check the return value of the (1) setuid, (2) setgid, or (3) setgroups functions, which might cause lighttpd to run as root if it is restarted and allows remote attackers to gain privileges, as demonstrated by multiple calls to the clone function that cause setuid to fail when the user process limit is reached.","published":"2013-11-20T14:12:31.000Z","lastModified":"2026-06-16T23:57:27.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":7.6,"severity":"HIGH","vector":"AV:N/AC:H/Au:N/C:C/I:C/A:C"},"cwe":["CWE-264"],"affected":["lighttpd/lighttpd","debian/debian linux","opensuse/opensuse"],"epss":{"score":0.10721,"percentile":0.95789,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 10.7%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2013_02.txt","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://jvn.jp/en/jp/JVN37417423/index.html","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-updates/2014-01/msg00049.html","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=141576815022399&w=2","tags":["Issue Tracking","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/55682","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2013/11/12/4","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10310","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://www.debian.org/security/2013/dsa-2795","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2013_02.txt","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://jvn.jp/en/jp/JVN37417423/index.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2014-01/msg00049.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=141576815022399&w=2","tags":["Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/55682","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2013/11/12/4","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10310","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2013/dsa-2795","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2013-4559","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}