CVE-2013-4559

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.

Category

7.6
CVSS
Severity: High
CVSS 2.0 •
EPSS 10.09% Top 10%
Vendor Advisory marc.info Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory lighttpd.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/55682 third party advisory
http://marc.info/?l=bugtraq&m=141576815022399&w=2 issue tracking third party advisory vendor advisory
http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2013_02.txt vendor advisory
http://lists.opensuse.org/opensuse-updates/2014-01/msg00049.html mailing list third party advisory vendor advisory
https://www.debian.org/security/2013/dsa-2795 third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2013/11/12/4 third party advisory mailing list
https://kc.mcafee.com/corporate/index?page=content&id=SB10310 third party advisory
http://jvn.jp/en/jp/JVN37417423/index.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2013-4559?
CVE-2013-4559 has been scored as a high severity vulnerability.
How to fix CVE-2013-4559?
To fix CVE-2013-4559, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-4559 being actively exploited in the wild?
It is possible that CVE-2013-4559 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~10% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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