Input validation error in OpenSSH - CVE-2014-2653
Published: March 27, 2014 / Updated: August 3, 2020
Vulnerability identifier: #VU33294
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-2653
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The verify_host_key function in sshconnect.c in the client in OpenSSH 6.6 and earlier allows remote servers to trigger the skipping of SSHFP DNS RR checking by presenting an unacceptable HostCertificate.
Affected software
OpenSSH
Amazon Linux AMI
Slackware Linux
openssh (Alpine package)
Amazon Linux AMI
Slackware Linux
openssh (Alpine package)
How to mitigate CVE-2014-2653
Install update from vendor's website.
OpenSSH - update to 6.6p1
openssh (Alpine package) - update to 5.9_p1-r4
openssh (Alpine package) - update to 5.9_p1-r4
External References
- http://advisories.mageia.org/MGASA-2014-0166.html
- http://aix.software.ibm.com/aix/efixes/security/openssh_advisory4.asc
- http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134026.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-May/133537.html
- http://marc.info/?l=bugtraq&m=141576985122836&w=2
- http://openwall.com/lists/oss-security/2014/03/26/7
- http://rhn.redhat.com/errata/RHSA-2014-1552.html
- http://rhn.redhat.com/errata/RHSA-2015-0425.html
- http://secunia.com/advisories/59855
- http://www.debian.org/security/2014/dsa-2894
- http://www.mandriva.com/security/advisories?name=MDVSA-2014:068
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:095
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
- http://www.securityfocus.com/bid/66459
- http://www.ubuntu.com/usn/USN-2164-1
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742513