Null pointer dereference

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by modsession can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service...

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 modauthdigest. 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 i...

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...

Stack overflow

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in modauthdigest. 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 i...

Null pointer dereference

Apache HTTP Server versions 2.4.41 to 2.4.46 modproxyhttp 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...

Code injection

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

CVE-2021-26690

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by modsession can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service...

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...

UBUNTU-CVE-2021-30641

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

CVE-2021-30641

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

CVE-2021-30641 Unexpected URL matching with 'MergeSlashes OFF'

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

CVE-2021-30641

CVE-2021-30641 affects Apache HTTP Server 2.4.39–2.4.46 with unexpected matching behavior when MergeSlashes OFF. Connected sources indicate patched versions: Debian fixes in 2.4.38-based packages, AlmaLinux/RedHat advisories reference a fix in Apache 2.4.51 for supported Check Point versions, and...

CVE-2021-26691 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...

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-2021-26691

CVE-2021-26691 affects Apache HTTP Server, where a crafted SessionHeader can cause a heap overflow in 2.4.0–2.4.46. Several connected advisories indicate that updates have been released (e.g., AlmaLinux/CentOS/Red Hat ecosystems) and that newer Apache HTTP Server versions (e.g., 2.4.51 in Check P...

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 modsession can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service...

CVE-2021-26690

CVE-2021-26690 affects Apache HTTP Server 2.4.0–2.4.46 due to a NULL pointer dereference in mod_session when parsing a crafted Cookie header, leading to Denial of Service. Public advisories and vendor pages confirm a patch exists in newer httpd releases (e.g., 2.4.46+/2.4.51 in various distributi...

CVE-2021-26690

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by modsession can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service...

CVE-2021-26690 mod_session NULL pointer dereference

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by modsession can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service...