An apache2 security update has been released for Debian GNU/Linux 8 Extended LTS to address several vulnerabilities.

ELA-491-1 apache2 security update

Package apache2
Version 2.4.10-10+deb8u19
Related CVEs CVE-2021-34798 CVE-2021-39275 CVE-2021-40438

Several vulnerabilities were discovered in the Apache HTTP server. An attacker could send proxied requests to arbitrary servers, corrupt memory in some setups involving third-party modules, and cause the server to crash.

CVE-2021-34798

Malformed requests may cause the server to dereference a NULL pointer.

CVE-2021-39275

ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may.

CVE-2021-40438

A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user.

For Debian 8 jessie, these problems have been fixed in version 2.4.10-10+deb8u19.

We recommend that you upgrade your apache2 packages.

Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/

  ELA-491-1 apache2 security update