Vulnerability identifier: #VU33088

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-5461

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

Buffer overflow in the vararg functions in ldo.c in Lua 5.1 through 5.2.x before 5.2.3 allows context-dependent attackers to cause a denial of service (crash) via a small number of arguments to a function with a large number of fixed arguments.

Mitigation
Install update from vendor's website.

External links
http://advisories.mageia.org/MGASA-2014-0414.html
http://lists.opensuse.org/opensuse-updates/2014-09/msg00030.html
http://secunia.com/advisories/59890
http://secunia.com/advisories/60869
http://secunia.com/advisories/61411
http://www.debian.org/security/2014/dsa-3015
http://www.debian.org/security/2014/dsa-3016
http://www.lua.org/bugs.html#5.2.2-1
http://www.mandriva.com/security/advisories?name=MDVSA-2015:144
http://www.openwall.com/lists/oss-security/2014/08/21/1
http://www.openwall.com/lists/oss-security/2014/08/21/4
http://www.openwall.com/lists/oss-security/2014/08/27/2
http://www.securityfocus.com/bid/69342
http://www.ubuntu.com/usn/USN-2338-1
http://security.gentoo.org/glsa/201701-53

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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.