A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GCM tag forgeries can cause key leakage.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: redhat
Published: 2018-07-30T15:00:00
Updated: 2024-08-05T07:54:36.330Z
Reserved: 2018-05-09T00:00:00
Link: CVE-2018-10903
Vulnrichment
No data.
NVD
Status : Modified
Published: 2018-07-30T16:29:00.283
Modified: 2024-11-21T03:42:16.003
Link: CVE-2018-10903
Redhat