Auth bypass in Linux Kernel
CVE-2012-5975
The SSH USERAUTH CHANGE REQUEST feature in SSH Tectia Server 6.0.4 through 6.0.20, 6.1.0 through 6.1.12, 6.2.0 through 6.2.5, and 6.3.0 through 6.3.2 on UNIX and Linux, when old-style password authentication is enabled, allows remote attackers to bypass authentication via a crafted session involving entry of blank passwords, as demonstrated by a root login session from a modified OpenSSH client with an added input_userauth_passwd_changereq call in sshconnect2.c.
Vulnerability class: Broken Authentication
EPSS: 0.359 (98.4th percentile) — read the EPSS interpretation.
Affected products
- Linux Linux_kernel
- Ssh Tectia_server — versions 6.0.4, 6.0.5, 6.0.6
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (exploit, x_refsource_EXPLOIT-DB)
- cve@mitre.org (mailing-list, x_refsource_FULLDISC)
- cve@mitre.org (mailing-list, x_refsource_FULLDISC)
- cve@mitre.org (Exploit, x_refsource_MISC)
Frequently asked questions
- What is CVE-2012-5975?
- CVE-2012-5975 is a vulnerability in Linux Kernel, classified under Improper Authentication. Published 2012-12-04.
- Is CVE-2012-5975 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.