CVE-2011-4362
MEDIUM · CVSS 5.0EPSS 21.1%EU EUVD
Integer signedness error in the base64_decode function in the HTTP authentication functionality (http_auth.c) in lighttpd 1.4 before 1.4.30 and 1.5 before SVN revision 2806 allows remote attackers to cause a denial of service (segmentation fault) via crafted base64 input that triggers an out-of-bounds read with a negative index.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- EPSS score
- 21.1% (98th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-4292)
- Published
- December 24, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-4292 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- debian / debian linux
- debian / debian linux
- debian / debian linux
- lighttpd / lighttpd
- lighttpd / lighttpd
References
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.html(Broken Link)
- http://blog.pi3.com.pl/?p=277(Exploit, Third Party Advisory)
- http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt(Exploit, Patch, Vendor Advisory)
- http://jvn.jp/en/jp/JVN37417423/index.html(Third Party Advisory)
- http://redmine.lighttpd.net/issues/2370(Exploit, Patch, Vendor Advisory)
- http://secunia.com/advisories/47260(Third Party Advisory)
- http://www.debian.org/security/2011/dsa-2368(Third Party Advisory)
- http://www.exploit-db.com/exploits/18295(Exploit, Third Party Advisory, VDB Entry)
- http://www.openwall.com/lists/oss-security/2011/11/29/13(Exploit, Mailing List, Patch, Third Party Advisory)
- http://www.openwall.com/lists/oss-security/2011/11/29/8(Exploit, Mailing List, Patch, Third Party Advisory)
- http://www.securitytracker.com/id?1026359(Third Party Advisory, VDB Entry)
- https://bugzilla.redhat.com/show_bug.cgi?id=758624(Issue Tracking, Third Party Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71536(Third Party Advisory, VDB Entry)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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