Debian update for mediawiki

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU23832

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19709

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.

Mitigation

Update the affected package to version: 1:1.27.7-1~deb9u3, 1:1.31.6-1~deb10u1.

Vulnerable software versions

mediawiki (Debian package): 1:1.27.0-1 - 1:1.31.6-1

External links

http://www.debian.org/security/2019/dsa-4592

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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