CVE-2015-8805

9.8 CRITICAL
Published: February 23, 2016 Modified: May 06, 2026
View on NVD

Description

The ecc_256_modq 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-2015-8803.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-02/msg00091.html
Source: cve@mitre.org
http://lists.opensuse.org/opensuse-updates/2016-02/msg00093.html
Source: cve@mitre.org
http://lists.opensuse.org/opensuse-updates/2016-02/msg00100.html
Source: cve@mitre.org
http://rhn.redhat.com/errata/RHSA-2016-2582.html
Source: cve@mitre.org
http://www.openwall.com/lists/oss-security/2016/02/02/2
Source: cve@mitre.org
http://www.openwall.com/lists/oss-security/2016/02/03/1
Source: cve@mitre.org
http://www.securityfocus.com/bid/84272
Source: cve@mitre.org
http://www.ubuntu.com/usn/USN-2897-1
Source: cve@mitre.org
https://blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html
Source: cve@mitre.org
https://git.lysator.liu.se/nettle/nettle/commit/c71d2c9d20eeebb985e3872e4550137209e3ce4d
Source: cve@mitre.org
Patch
http://lists.opensuse.org/opensuse-updates/2016-02/msg00091.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-updates/2016-02/msg00093.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-updates/2016-02/msg00100.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://rhn.redhat.com/errata/RHSA-2016-2582.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2016/02/02/2
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2016/02/03/1
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/84272
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.ubuntu.com/usn/USN-2897-1
Source: af854a3a-2127-422b-91ae-364da2661108
https://blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://git.lysator.liu.se/nettle/nettle/commit/c71d2c9d20eeebb985e3872e4550137209e3ce4d
Source: af854a3a-2127-422b-91ae-364da2661108
Patch

20 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
1.2%
79th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-310

Affected Vendors

opensuse canonical nettle_project

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