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.
The product uses a broken or risky cryptographic algorithm or protocol.
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1942533 | issue tracking third party advisory patch |
| https://security.gentoo.org/glsa/202105-31 | third party advisory vendor advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQKWVVMAIDAJ7YAA3VVO32BHLDOH2E63/ | vendor advisory |
| https://www.debian.org/security/2021/dsa-4933 | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2021/09/msg00008.html | third party advisory mailing list |
| https://security.netapp.com/advisory/ntap-20211022-0002/ | third party advisory |