#VU44349 Credentials management in OpenSSH - CVE-2012-0814
Vulnerability identifier: #VU44349
Vulnerability risk: Low
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID:
CWE-ID:
CWE-255
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
OpenSSH
Server applications /
Remote management servers, RDP, SSH
Vendor: OpenSSH
Description
The vulnerability allows a remote #AU# to gain access to sensitive information.
The auth_parse_options function in auth-options.c in sshd in OpenSSH before 5.7 provides debug messages containing authorized_keys command options, which allows remote authenticated users to obtain potentially sensitive information by reading these messages, as demonstrated by the shared user account required by Gitolite. NOTE: this can cross privilege boundaries because a user account may intentionally have no shell or filesystem access, and therefore may have no supported way to read an authorized_keys file in its own home directory.
Mitigation
Install update from vendor's website.
Vulnerable software versions
OpenSSH: 1.2 - 5.5
External links
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=657445
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
https://openwall.com/lists/oss-security/2012/01/26/15
https://openwall.com/lists/oss-security/2012/01/26/16
https://openwall.com/lists/oss-security/2012/01/27/1
https://openwall.com/lists/oss-security/2012/01/27/4
https://osvdb.org/78706
https://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth-options.c
https://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/auth-options.c.diff?r1=1.53;r2=1.54
https://www.securityfocus.com/bid/51702
https://exchange.xforce.ibmcloud.com/vulnerabilities/72756
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
