CVE-2019-11072 Integer overflow in n/a
Remote attackers can cause a denial of service via integer overflow in lighttpd when a specific non-default feature is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-11072?
CVE-2019-11072 is a critical vulnerability in n/a, published on 10 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-190
Which versions are affected by CVE-2019-11072?
It affects 1 product.
Products include Lighttpd Lighttpd.
How do I fix CVE-2019-11072?
Upgrade to a fixed version.
Is CVE-2019-11072 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-11072 exists.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2019-11072, GHSA-59gp-rjv5-p2h6.