Security Vulnerability reported in Apache 2.4.46 embedded in NMC

Below is the list of the CVEs identified by the security scanner.

CVE-2020-35452

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

CVE-2021-26691

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

CVE-2021-26690

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

CVE-2020-13950

Apache HTTP Server versions 2.4.41 to 2.4.46 mod_proxy_http can be made to crash (NULL pointer dereference) with specially crafted requests using both Content-Length and Transfer-Encoding headers, leading to a Denial of Service

CVE-2020-13938
Apache HTTP Server versions 2.4.0 to 2.4.46 Unprivileged local users can stop httpd on Windows

CVE-2019-17567

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.

CVE-2021-30641

Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF'

Environment:

NetWorker server version (service pack and build) – 19.4.0.1 build 95
Operating System where the NetWorker is running – Oracle Linux 7

Known issue: [NetWorker] Escalation 40810 - Security Vulnerability reported in Apache 2.4.46 embedded in NMC

The CVEs mentioned do not have an impact on the NMC. 


Vulnerability    NMC affected    Reason    

CVE-2020-35452    No    mod_auth_digest is not loaded.     
CVE-2021-26691    No    mod_session module is not loaded    
CVE-2021-26690    No    mod_sessions module is not loaded.     
CVE-2020-13950    No    mod_proxy_http module is not loaded.     
CVE-2020-13938    No    Http start/stop happens using gstd service and that service can only be started and stopped using Admin user.     
CVE-2019-17567    No    mod_proxy_wstunnel module is not loaded.     
CVE-2021-30641    No    mod_proxy module is not loaded.