Permissions, Privileges, and Access Controls in apache2 (Alpine package)

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU32634

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-1896

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

mod_dav.c in the Apache HTTP Server before 2.2.25 does not properly determine whether DAV is enabled for a URI, which allows remote attackers to cause a denial of service (segmentation fault) via a MERGE request in which the URI is configured for handling by the mod_dav_svn module, but a certain href attribute in XML data refers to a non-DAV URI.

Mitigation

Install update from vendor's website.

Vulnerable software versions

apache2 (Alpine package): 2.2.20-r0 - 2.2.24-r0

External links

http://git.alpinelinux.org/aports/commit/?id=3015e5e42b372f85e4d2fa746ce8c8ed68e0ac6a
http://git.alpinelinux.org/aports/commit/?id=4b8d261b5d7f5e82122cdc6d62e7ee382d9a4a23
http://git.alpinelinux.org/aports/commit/?id=bae0972f3c8bee8cb8fdf9d73463d1fe043ba17c

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.