Bug#904107: apache2: CVE-2018-8011: mod_md, DoS via Coredumps on specially crafted requests

[Salvatore Bonaccorso <carnil@debian.org>]

Source: apache2
Version: 2.4.33-1
Severity: important
Tags: security upstream

Hi,

The following vulnerability was published for apache2.

CVE-2018-8011[0]:
| By specially crafting HTTP requests, the mod_md challenge handler
| would dereference a NULL pointer and cause the child process to
| segfault. This could be used to DoS the server. Fixed in Apache HTTP
| Server 2.4.34 (Affected 2.4.33).

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2018-8011
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8011
[1] https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2018-8011

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore