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OpenSSL: AES OCB fails to encrypt some bytes (CVE-2022-2097) - Windows

Information

Severity

Severity

Medium

Family

Family

Buffer overflow

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

2 months ago

Modified

Modified

2 months ago

Summary

OpenSSL is prone to an information disclosure vulnerability.

Insight

Insight

AES OCB mode for 32-bit x86 platforms using the AES-NI assembly optimised implementation will not encrypt the entirety of the data under some circumstances. This could reveal sixteen bytes of data that was preexisting in the memory that wasn't written. In the special case of 'in place' encryption, sixteen bytes of the plaintext would be revealed. Since OpenSSL does not support OCB based cipher suites for TLS and DTLS, they are both unaffected.

Affected Software

Affected Software

OpenSSL version 1.1.1 and 3.0.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Update to version 1.1.1q, 3.0.5 or later.

Common Vulnerabilities and Exposures (CVE)