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OpenSSL: OCSP Invalid Key DoS Issue (20130205) (Linux)
Information
Severity
Severity
Medium
Family
Family
Denial of Service
CVSSv2 Base
CVSSv2 Base
5.0
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
2 years ago
Modified
Modified
2 years ago
Summary
OpenSSL is prone to a denial of service attack.
Insight
Insight
OpenSSL does not properly perform signature verification for OCSP responses, which allows remote OCSP servers to cause a denial of service (NULL pointer dereference and application crash) via an invalid key.
Affected Software
Affected Software
OpenSSL 0.9.8 through 0.9.8x, 1.0.0 through 1.0.0j and 1.0.1 through 1.0.1c.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 0.9.8y, 1.0.0k, 1.0.1d or later.