CVE-2020-11993

Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above “info” will mitigate this vulnerability for unpatched servers.

Summary:

Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above “info” will mitigate this vulnerability for unpatched servers.

Reference Links(if available):

  • https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993
  • https://security.gentoo.org/glsa/202008-04
  • https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71@%3Cdev.httpd.apache.org%3E
  • https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1@%3Cdev.httpd.apache.org%3E
  • https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672@%3Cdev.httpd.apache.org%3E
  • CVSS Score (if available)

    v2: / MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P

    v3: / HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

    Links to Exploits(if available)