First published: Tue Feb 23 2016(Updated: )
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.
Credit: cve@mitre.org
Affected Software | Affected Version | How to fix |
---|---|---|
Nettle project Nettle | <=3.1.1 | |
Ubuntu Linux | =14.04 | |
Ubuntu Linux | =15.10 | |
openSUSE | =42.1 | |
openSUSE | =13.1 | |
openSUSE | =13.2 |
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CVE-2015-8803 is considered a high severity vulnerability due to the potential for improper output in cryptographic computations.
To fix CVE-2015-8803, upgrade Nettle to version 3.2 or later.
CVE-2015-8803 affects Nettle versions prior to 3.2, as well as specific versions of Ubuntu Linux and openSUSE.
CVE-2015-8803 can allow attackers to leverage incorrect cryptographic outputs to exploit unspecified vectors.
The nature of CVE-2015-8803 allows potential exploitation through local or remote vectors, depending on the attack scenario.