Falko Strenzke

**Name of the Vulnerable Software and Affected Versions** Thunderbird versions prior to 68.1.1 **Description** The issue is related to insufficient input validation in the handling of S/MIME messages. Specifically, a crafted message with an inner encryption layer and an outer SignedData layer could be shown as having a valid digital signature, even if the signer did not have access to the encrypted message's contents. This could potentially allow a remote attacker to compromise data integrity. **Recommendations** For Thunderbird versions prior to 68.1.1, update to version 68.1.1 or later to resolve the issue.

**Name of the Vulnerable Software and Affected Versions** Botan versions 1.8.0 through 1.11.33 **Description** The issue arises when decoding BER data, potentially leading to an integer overflow. This overflow causes an incorrect length field to be computed. Some API callers may utilize the returned length field, which could be controlled by an attacker, resulting in memory corruption or other failures. **Recommendations** For Botan versions 1.8.0 through 1.11.33, consider updating to a version where this issue is fixed, as using the returned length field from the BER data decoding could lead to memory corruption or other failures. At the moment, there is no information about a newer version that contains a fix for this vulnerability.