Vulnerability in Lighttpd
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 crafted base64 input that triggers an out-of-bounds read with a negative index.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.211 (97.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.226 · newest: 0.211 · change: -0.015
Affected products
- Lighttpd — versions 1.5.0
- Debian Linux — versions 5.0, 6.0, 7.0
References
- secunia.com/advisories/47260 (Third Party Advisory, third-party-advisory)
- archives.neohapsis.com/archives/bugtraq/2011-12/0167.html (mailing-list, Broken Link)
- www.openwall.com/lists/oss-security/2011/11/29/8 (mailing-list, Exploit, Patch, Mailing List, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.debian.org/security/2011/dsa-2368 (vendor-advisory, Third Party Advisory)
- www.exploit-db.com/exploits/18295 (Exploit, VDB Entry, Third Party Advisory, exploit)
- blog.pi3.com.pl/ (Exploit, Third Party Advisory)
- download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt (Exploit, Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2011/11/29/13 (mailing-list, Exploit, Patch, Mailing List, Third Party Advisory)
- www.securitytracker.com/id (VDB Entry, Third Party Advisory, vdb-entry)