Stack-based buffer overflow in FreeRADIUS

1) Stack-based buffer overflow

EUVDB-ID: #VU32556

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-2015

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing a long password hash, as demonstrated by an SSHA hash. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

The vendor has issued the following versions to address this vulnerability: 2.2.4, 3.0.2.

Vulnerable software versions

FreeRADIUS: 2.2.0 - 3.0.1

External links

http://lists.freebsd.org/pipermail/freebsd-bugbusters/2014-February/000610.html
http://lists.freebsd.org/pipermail/freebsd-bugbusters/2014-February/000612.html
http://lists.freebsd.org/pipermail/freebsd-bugbusters/2014-February/000616.html
http://rhn.redhat.com/errata/RHSA-2015-1287.html
http://ubuntu.com/usn/usn-2122-1
http://www.openwall.com/lists/oss-security/2014/02/18/3
http://www.securityfocus.com/bid/65581
http://bugzilla.redhat.com/show_bug.cgi?id=1066761

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.