Integer Overflow or Wraparound Affecting lighttpd package, versions <1.4.53-4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DEBIAN13-LIGHTTPD-5686240
- published10 Apr 2019
- disclosed10 Apr 2019
Introduced: 10 Apr 2019
CVE-2019-11072 (opens in a new tab)How to fix?
Upgrade Debian:13 lighttpd to version 1.4.53-4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream lighttpd package and not the lighttpd package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
lighttpd before 1.4.54 has a signed integer overflow, which might allow remote attackers 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.