Input validation error in FreeBSD - CVE-2014-8475
Published: November 18, 2014 / Updated: August 9, 2020
Vulnerability identifier: #VU41094
CSH Severity: Medium
CVSS v4.0: 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-2014-8475
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FreeBSD Foundation
Affected software:
FreeBSD
FreeBSD
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
FreeBSD 9.1, 9.2, and 10.0, when compiling OpenSSH with Kerberos support, uses incorrect library ordering when linking sshd, which causes symbols to be resolved incorrectly and allows remote attackers to cause a denial of service (sshd deadlock and prevention of new connections) by ending multiple connections before authentication is completed.
How to mitigate CVE-2014-8475
Install update from vendor's website.
Sources
- http://packetstormsecurity.com/files/128972/FreeBSD-Security-Advisory-sshd-Denial-Of-Service.html
- http://secunia.com/advisories/61440
- http://www.securityfocus.com/bid/70913
- http://www.securitytracker.com/id/1031168
- https://exchange.xforce.ibmcloud.com/vulnerabilities/98491
- https://www.freebsd.org/security/advisories/FreeBSD-SA-14%3A24.sshd.asc