Description
When verifying a mac with a ChunkedMacVerification object, Tink compares the resulting tag with non constant time comparison. This potentially allows an attacker to use timinig information as a side channel in order to get information how many bytes of a given tag match the correct tag. This in turn could allow to find a correct tag bytewise.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Google Tink-Java
Default version status: unaffected
All releases before 1.21.0, including 1.21.0.affected
Google Tink-Android
Default version status: unaffected
All releases before 1.21.0, including 1.21.0.affected