Input validation error in mumble (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-20743
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 mumble (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU33178

Risk: Medium

CVSSv4.0: 6.6 [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 - Improper input validation

Exploit availability: No

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

mumble (Alpine package): 1.2.10-r0 - 1.2.19-r1

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=738ee3c9be3e7f43b6fed55917ea3b702b13d71a
https://git.alpinelinux.org/aports/commit/?id=e48242318848b1ec3264a7c02db1d5dc1a93e6ca
https://git.alpinelinux.org/aports/commit/?id=235782c8b6162aa4ad881f1539664449101bf8a5
https://git.alpinelinux.org/aports/commit/?id=442ccc174a119c491694394b8050532b256cd0ed
https://git.alpinelinux.org/aports/commit/?id=4a453130f4b0f55d01ed05035747d838f3aad53b
https://git.alpinelinux.org/aports/commit/?id=815772ad9958ac8666893e38b9b8b48cb956c6e3


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.



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