#VU32476 Input validation error in rsyslog - CVE-2014-3683

Vulnerability identifier: #VU32476

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-3683

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
rsyslog
Server applications / Other server solutions

Vendor: rsyslog.com

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (crash) via a large priority (PRI) value.

Mitigation
Update to version 7.6.7.

Vulnerable software versions

rsyslog: 7.6.0 - 7.6.6

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External links
https://lists.opensuse.org/opensuse-security-announce/2014-10/msg00005.html
https://lists.opensuse.org/opensuse-updates/2014-10/msg00020.html
https://lists.opensuse.org/opensuse-updates/2014-10/msg00021.html
https://secunia.com/advisories/61494
https://www.debian.org/security/2014/dsa-3047
https://www.openwall.com/lists/oss-security/2014/09/30/15
https://www.openwall.com/lists/oss-security/2014/10/03/1
https://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
https://www.rsyslog.com/remote-syslog-pri-vulnerability-cve-2014-3683/
https://www.ubuntu.com/usn/USN-2381-1

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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.