NULL pointer dereference in httpd core
Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier.
Published Updated
PatchFirst · Latest vulnerabilities
apache httpd 2.4.17: known vulnerabilities · Page 5
Known vulnerabilities affecting apache httpd 2.4.17: 86. Compare the fixes below with your installed release.
Vulnerabilities: 86
Apache HTTP Server mod_session response handling heap overflow
In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow
Published Updatedmod_session NULL pointer dereference
Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service
Published Updatedmod_auth_digest possible stack overflow by one nul byte
Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in mod_auth_digest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or compilation option might make it possible, with limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow
Published UpdatedImproper Handling of Insufficient Privileges
Apache HTTP Server versions 2.4.0 to 2.4.46 Unprivileged local users can stop httpd on Windows
Published Updatedmod_proxy_wstunnel tunneling of non Upgraded connections
Apache HTTP Server versions 2.4.6 to 2.4.46 mod_proxy_wstunnel configured on an URL that is not necessarily Upgraded by the origin server was tunneling the whole connection regardless, thus allowing for subsequent requests on the same connection to pass through with no HTTP validation, authentication or authorization possibly configured.
Published Updated
Check your server
Check your installed stack and versions against the current vulnerability feeds.