CVE-2011-4362
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 21.1%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 21.11% probability · 98th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 31 December 2011
- CISA KEV
- Not listed
- Affected
- lighttpd/lighttpd · debian/debian linux
- Source
- secalert@redhat.com
EPSS 21.1% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.htmlBroken Link
- http://blog.pi3.com.pl/?p=277Exploit, Third Party Advisory
- http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txtExploit, Patch, Vendor Advisory
- http://jvn.jp/en/jp/JVN37417423/index.htmlThird Party Advisory
- http://redmine.lighttpd.net/issues/2370Exploit, Patch, Vendor Advisory
- http://secunia.com/advisories/47260Third Party Advisory
- http://www.debian.org/security/2011/dsa-2368Third Party Advisory
- http://www.exploit-db.com/exploits/18295Exploit, Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2011/11/29/13Exploit, Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2011/11/29/8Exploit, Mailing List, Patch, Third Party Advisory
- http://www.securitytracker.com/id?1026359Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=758624Issue Tracking, Third Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71536Third Party Advisory, VDB Entry
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.htmlBroken Link
- http://blog.pi3.com.pl/?p=277Exploit, Third Party Advisory
- http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txtExploit, Patch, Vendor Advisory
- http://jvn.jp/en/jp/JVN37417423/index.htmlThird Party Advisory
- http://redmine.lighttpd.net/issues/2370Exploit, Patch, Vendor Advisory
- http://secunia.com/advisories/47260Third Party Advisory
- http://www.debian.org/security/2011/dsa-2368Third Party Advisory
- http://www.exploit-db.com/exploits/18295Exploit, Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2011/11/29/13Exploit, Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2011/11/29/8Exploit, Mailing List, Patch, Third Party Advisory
- http://www.securitytracker.com/id?1026359Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=758624Issue Tracking, Third Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71536Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.