A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST DSA, EDDSA & ECDSA) result in the Elliptic Curve Cryptography point (ECC) multiply function being called with out-of-range scalers, possibly resulting in incorrect results. This flaw allows an attacker to force an invalid signature, causing an assertion failure or possible validation. The highest threat to this vulnerability is to confidentiality, integrity, as well as system availability.
References
Link | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=1942533 | Issue Tracking Patch Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2021/09/msg00008.html | Mailing List Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQKWVVMAIDAJ7YAA3VVO32BHLDOH2E63/ | |
https://security.gentoo.org/glsa/202105-31 | Third Party Advisory |
https://security.netapp.com/advisory/ntap-20211022-0002/ | Third Party Advisory |
https://www.debian.org/security/2021/dsa-4933 | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: redhat
Published: 2021-04-05T21:31:06
Updated: 2021-10-22T17:07:06
Reserved: 2020-12-17T00:00:00
Link: CVE-2021-20305
JSON object: View
NVD Information
Status : Modified
Published: 2021-04-05T22:15:12.727
Modified: 2023-11-07T03:29:05.253
Link: CVE-2021-20305
JSON object: View
Redhat Information
No data.