A flaw was found in libkcapi.
A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs (over 64 KiB) in stateful modes such as Counter (CTR) or Cipher Block Chaining (CBC), the library improperly reuses the Initialization Vector (IV) for each internal data chunk. A remote attacker could potentially exploit this by making an application that uses libkcapi process specially crafted large
What happened
A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs (over 64 KiB) in stateful modes such as Counter (CTR) or Cipher Block Chaining (CBC), the library improperly reuses the Initialization Vector (IV) for each internal data chunk. A remote attacker could potentially exploit this by making an application that uses libkcapi process specially crafted large inputs. This can lead to a significant weakening of data confidentiality, as the repeated IV use can expose relationships in encrypted plaintext, and may also affect data integrity by causing incorrect cryptographic processing.
Does it affect you
Not enough information
No products recorded, so this cannot be matched against anything.
What to do
- Follow the vendor advisory for the fixed release and any interim mitigation.
access.redhat.com - Follow the vendor advisory for the fixed release and any interim mitigation.
bugzilla.redhat.com
Vendor's affected list
- rhel
- Exactly 8.0
Sources
A verdict here is derived from what you told us and what the vendor published. It is not an assessment of your environment. Why we never say you are safe.