Out-of-bounds Write
The OCB feature in libnettle in Nettle 3.9 before 3.9.1 allows memory corruption.
Advisories for Conan/Nettle package
2023
2021
Improper Input Validation
A flaw was found in the way nettle's RSA decryption functions handled specially crafted ciphertext. An attacker could use this flaw to provide a manipulated ciphertext leading to application crash and denial of service.
Use of a Broken or Risky Cryptographic Algorithm
A flaw was found in Nettle, 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.