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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
18 years ago
Modified
Modified
4 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.