OpenSSH < 5.7 Multiple Vulnerabilities
High Nessus Plugin ID 44081
SynopsisThe remote SSH service may be affected by multiple vulnerabilities.
DescriptionAccording to its banner, the version of OpenSSH running on the remote host is earlier than 5.7. Versions before 5.7 may be affected by the following vulnerabilities :
- A security bypass vulnerability because OpenSSH does not properly validate the public parameters in the J-PAKE protocol. This could allow an attacker to authenticate without the shared secret. Note that this issue is only exploitable when OpenSSH is built with J-PAKE support, which is currently experimental and disabled by default, and that Nessus has not checked whether J-PAKE support is indeed enabled. (CVE-2010-4478)
- The auth_parse_options function in auth-options.c in sshd provides debug messages containing authorized_keys command options, which allows remote, authenticated users to obtain potentially sensitive information by reading these messages. (CVE-2012-0814)
SolutionUpgrade to OpenSSH 5.7 or later.