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CVE-2013-4559

7.6 · HIGH

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 atta…

Published Nov 20, 2013lighttpdCWE-264EPSS 10.72%

Overview

CVE-2013-4559 is a high-severity vulnerability affecting lighttpd lighttpd. It was published on November 20, 2013 and has a CVSS 2.0 base score of 7.6 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from lighttpd. Update lighttpd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
lighttpdlighttpd>= 0, < 1.4.33Affected

References

Refdownload.lighttpd.net/lighttpd/security/lighttpd_sa_2013_02.txtRefjvn.jp/en/jp/JVN37417423/index.htmlReflists.opensuse.org/opensuse-updates/2014-01/msg00049.htmlRefmarc.info/?l=bugtraq&m=141576815022399&w=2Refsecunia.com/advisories/55682Refwww.openwall.com/lists/oss-security/2013/11/12/4Refkc.mcafee.com/corporate/index?page=content&id=SB10310Refwww.debian.org/security/2013/dsa-2795Refdownload.lighttpd.net/lighttpd/security/lighttpd_sa_2013_02.txtRefjvn.jp/en/jp/JVN37417423/index.html

How CyberStrike helps

Frequently asked questions

What is CVE-2013-4559?

CVE-2013-4559 is a high-severity vulnerability affecting lighttpd lighttpd. It was published on November 20, 2013 and has a CVSS 2.0 base score of 7.6 (HIGH).

How severe is CVE-2013-4559?

This vulnerability has a CVSS 2.0 base score of 7.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-4559?

Check the references section for vendor advisories and patches from lighttpd. Update lighttpd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2013-4559?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-4559 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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