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Sendmail 8.8.8 to 8.12.7 Double Pipe Access Validation Vulnerability
Information
Severity
Severity
Critical
Family
Family
SMTP problems
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
5 years ago
Summary
smrsh (supplied by Sendmail) is designed to prevent the execution of commands outside of the restricted environment. However, when commands are entered using either double pipes or a mixture of dot and slash characters, a user may be able to bypass the checks performed by smrsh. This can lead to the execution of commands outside of the restricted environment.
Solution
Solution
Upgrade to the latest version of Sendmail (or at least 8.12.8).