CVE Vulnerability

CVE-2019-11072

** DISPUTED ** 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."

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://redmine.lighttpd.net/issues/2945 Exploit Patch
https://github.com/lighttpd/lighttpd1.4/commit/32120d5b8b3203fc21ccb9eafb0eaf824bb59354 Patch Third Party Advisory
http://www.securityfocus.com/bid/107907 Third Party Advisory VDB Entry
Configurations

Configuration 1

cpe:2.3:a:lighttpd:lighttpd:*:*:*:*:*:*:*:*
Information

Published : 2019-04-10 10:29

Updated : 2019-04-23 08:32

NVD link : CVE-2019-11072

Mitre link : CVE-2019-11072

Products Affected
No products.
CWE
CWE-190