Input validation error in mumble - CVE-2018-20743
Published: January 25, 2019 / Updated: August 3, 2020
Vulnerability identifier: #VU33178
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-20743
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: wiki.mumble.info
Affected software:
mumble
mumble
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
murmur in Mumble through 1.2.19 before 2018-08-31 mishandles multiple concurrent requests that are persisted in the database, which allows remote attackers to cause a denial of service (daemon hang or crash) via a message flood.
How to mitigate CVE-2018-20743
Install update from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00045.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00023.html
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00058.html
- https://bugs.debian.org/919249
- https://github.com/mumble-voip/mumble/issues/3505
- https://github.com/mumble-voip/mumble/pull/3510
- https://github.com/mumble-voip/mumble/pull/3512
- https://lists.debian.org/debian-lts-announce/2019/02/msg00006.html
- https://www.debian.org/security/2019/dsa-4402