Buffer overflow in OpenSSH before 2.9.9, and 3.x before 3.2.1, with Kerberos/AFS support and KerberosTgtPassing or AFSTokenPassing enabled, allows remote and local authenticated users to gain privileges.

The version of SunSSH running on the remote host has an information disclosure vulnerability.  A design flaw in the SSH specification could allow a man-in-the-middle attacker to recover up to 32 bits of plaintext from an SSH-protected connection in the standard configuration.  An attacker could exploit this to gain access to sensitive information.

Note that this version of SunSSH is also prone to several additional issues but Nessus did not test for them.

The remote host is running a version of OpenSSH older than OpenSSH 3.2.1. A buffer overflow exists in the daemon if AFS is enabled on your system, or if the options KerberosTgtPassing or AFSTokenPassing are enabled.  Even in this scenario, the vulnerability may be avoided by enabling UsePrivilegeSeparation. Versions prior to 2.9.9 are vulnerable to a remote root exploit. Versions prior to 3.2.1 are vulnerable to a local root exploit.

Note: NNM has solely relied on the banner of the SSH client to perform this check. Any backported patches or workarounds such as recompiling or edited configurations are not observable through the banner. 

The remote host is running a version of OpenSSH that is older than 3.0.1. Versions older than 3.0.1 are vulnerable to a flaw in which an attacker may authenticate, provided that Kerberos V support has been enabled (which is not the case by default).  It is also vulnerable to an excessive memory clearing bug, believed to be unexploitable.

Note: NNM has solely relied on the banner of the SSH client to perform this check. Any backported patches or workarounds such as recompiling or edited configurations are not observable through the banner.

*** You may ignore this warning if this host is not using Kerberos V 

You are running a version of OpenSSH older than OpenSSH 3.2.1.

A buffer overflow exists in the daemon if AFS is enabled on your system, or if the options KerberosTgtPassing or AFSTokenPassing are enabled.  Even in this scenario, the vulnerability may be avoided by enabling UsePrivilegeSeparation.

Versions prior to 2.9.9 are vulnerable to a remote root exploit. Versions prior to 3.2.1 are vulnerable to a local root exploit.

ID	Name	Product	Family	Type	Severity
55992	SunSSH < 1.1.1 / 1.3 CBC Plaintext Disclosure	Nessus	Misc.	Remote	critical
1989	OpenSSH < 3.2.1 AFS/Kerberos Ticket/Token Passing Overflow	Nessus Network Monitor	SSH		high
1986	OpenSSH < 3.0.1 Multiple Vulnerabilities	Nessus Network Monitor	SSH		high
10954	OpenSSH Kerberos TGT/AFS Token Passing Remote Overflow	Nessus	Gain a shell remotely	Remote	high

Detections

Analytics

CVE-2002-0575

high

Tenable Plugins

critical

high

high

high