CVE-2015-8803
nettle: secp256 calculation bug
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · February 2, 2016
Updated · November 21, 2025
Description
The ecc_256_modp function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-256 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors, a different vulnerability than CVE-2015-8805.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 5.8AV:N/AC:M/Au:N/C:P/I:P/A:N
CWE-358 · Improperly Implemented Security Check for Standard