Credentials management in OpenSSH



| Updated: 2020-08-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2012-0814
CWE-ID CWE-255
Exploitation vector Network
Public exploit N/A
Vulnerable software
 OpenSSH
Server applications / Remote management servers, RDP, SSH

Vendor OpenSSH

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Credentials management

EUVDB-ID: #VU44349

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: CVE-2012-0814

CWE-ID: CWE-255 - Credentials Management

Exploit availability: No

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

CPE2.3 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.

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.



###SIDEBAR###