Apache HTTP Server is vulnerable to denial of service.A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service.
httpd.apache.org/security/vulnerabilities_24.html
www.openwall.com/lists/oss-security/2021/06/10/6
lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd@%3Cdev.httpd.apache.org%3E
lists.apache.org/thread.html/rae406c1d19c0dfd3103c96923dadac2af1cd0bad6905ab1ede153865@%3Cannounce.httpd.apache.org%3E
lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org%3E
lists.debian.org/debian-lts-announce/2021/07/msg00006.html
lists.fedoraproject.org/archives/list/[email protected]/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/
lists.fedoraproject.org/archives/list/[email protected]/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/
security-tracker.debian.org/tracker/CVE-2021-26690
security.gentoo.org/glsa/202107-38
security.netapp.com/advisory/ntap-20210702-0001/
www.debian.org/security/2021/dsa-4937
www.oracle.com/security-alerts/cpuoct2021.html