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Vulnerability Details : CVE-2015-8803

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.
Publish Date : 2016-02-23 Last Update Date : 2018-10-30
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 310

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2016:2582: nettle security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20162582 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2015-8803

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 15.10 * * * Version Details Vulnerabilities
3 Application Nettle Project Nettle * * * * Version Details Vulnerabilities
4 OS Opensuse Leap 42.1 * * * Version Details Vulnerabilities
5 OS Opensuse Opensuse 13.1 * * * Version Details Vulnerabilities
6 OS Opensuse Opensuse 13.2 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 2
Nettle Project Nettle 1
Opensuse Leap 1
Opensuse Opensuse 2

- References For CVE-2015-8803
REDHAT RHSA-2016:2582
SUSE openSUSE-SU-2016:0477
FEDORA FEDORA-2016-aa00f0631d
FEDORA FEDORA-2016-8ee88aee21
SUSE openSUSE-SU-2016:0475
FEDORA FEDORA-2016-89968f88d2
MLIST [oss-security] 20160202 Re: Miscomputations of elliptic curve scalar multiplications in Nettle
MLIST [oss-security] 20160202 Miscomputations of elliptic curve scalar multiplications in Nettle
MLIST [info-gnu] 20160128 ANNOUNCE: Nettle-3.2
SUSE openSUSE-SU-2016:0486 CONFIRM
MLIST [nettle-bugs] 20151212 secp256 calculation bug (already fixed)

- Metasploit Modules Related To CVE-2015-8803

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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