PT-2020-22805 · Mageia · Botan2
Published
2020-07-31
·
Updated
2020-07-31
None
No severity ratings or metrics are available. When they are, we'll update the corresponding info on the page.
Name of the Vulnerable Software and Affected Versions
No specific software or versions are mentioned, so the information cannot be provided.
Description
The issue concerns CBC padding operations that were not constant time, potentially leaking the length of plaintext values to an attacker through side channel attacks via shared resources like cache or branch predictor. Although no contents were leaked, the length information could be used to make inferences about the contents. This affects TLS CBC ciphersuites and CBC encryption using PKCS7 or similar padding mechanisms. The unpadding operations were already constant time and are not affected.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Botan2