Input validation error in mumble - CVE-2018-20743
Published: January 25, 2019 / Updated: August 3, 2020
Vulnerability identifier: #VU33178
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2018-20743
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
mumble
mumble (Alpine package)
SUSE Package Hub for SUSE Linux Enterprise
SUSE Linux
Opensuse
mumble (Alpine package)
SUSE Package Hub for SUSE Linux Enterprise
SUSE Linux
Opensuse
How to mitigate CVE-2018-20743
Install update from vendor's website.
mumble (Alpine package) - update to 1.2.19-r2
External References
- 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