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OpenSSH Channel Code Off by 1

Information

Severity

Severity

Critical

Family

Family

Gain a shell remotely

CVSSv2 Base

CVSSv2 Base

10.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

16 years ago

Modified

Modified

3 years ago

Summary

You are running a version of OpenSSH which is older than 3.1.

Insight

Insight

Versions prior than 3.1 are vulnerable to an off by one error that allows local users to gain root access, and it may be possible for remote users to similarly compromise the daemon for remote access. In addition, a vulnerable SSH client may be compromised by connecting to a malicious SSH daemon that exploits this vulnerability in the client code, thus compromising the client system.

Solution

Solution

Upgrade to OpenSSH 3.1 or apply the patch for prior versions.

Common Vulnerabilities and Exposures (CVE)