7.5
CVSSv2

CVE-2019-11072

Published: 10/04/2019 Updated: 23/04/2019
CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10
CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9
VMScore: 668
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Summary

** DISPUTED ** lighttpd prior to 1.4.54 has a signed integer overflow, which might allow remote malicious users to cause a denial of service (application crash) or possibly have unspecified other impact via a malicious HTTP GET request, as demonstrated by mishandling of /%2F? in burl_normalize_2F_to_slash_fix in burl.c. NOTE: The developer states "The feature which can be abused to cause the crash is a new feature in lighttpd 1.4.50, and is not enabled by default. It must be explicitly configured in the config file (e.g. lighttpd.conf). Certain input will trigger an abort() in lighttpd when that feature is enabled. lighttpd detects the underflow or realloc() will fail (in both 32-bit and 64-bit executables), also detected in lighttpd. Either triggers an explicit abort() by lighttpd. This is not exploitable beyond triggering the explicit abort() with subsequent application exit."

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Vendor Advisories

Debian Bug report logs - #926885 lighttpd: CVE-2019-11072 Package: src:lighttpd; Maintainer for src:lighttpd is Debian QA Group <packages@qadebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Thu, 11 Apr 2019 19:24:02 UTC Severity: grave Tags: security, upstream Found in version lighttpd/1453 ...