CVE-2015-8803

CRITICAL

Nettle < 3.2 - Incorrect Output in P-256 Elliptic Curve Implementation

Title source: llm

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.

References (14)

Core 14

Core References

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2016-02/msg00100.html

Various Sources x_refsource_misc

https://blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html

Vendor Advisory mailing-list x_refsource_mlist

https://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003028.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177473.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2016-02/msg00093.html

Patch x_refsource_confirm

https://git.lysator.liu.se/nettle/nettle/commit/c71d2c9d20eeebb985e3872e4550137209e3ce4d

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/USN-2897-1

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2016-02/msg00091.html

Mailing List mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2016/02/02/2

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2016-2582.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176807.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177229.html

Various Sources mailing-list x_refsource_mlist

https://lists.gnu.org/archive/html/info-gnu/2016-01/msg00006.html

Mailing List mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2016/02/03/1

Scores

CVSS v3 9.8

EPSS 0.1234

EPSS Percentile 94.0%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-254 CWE-310

Status published

Products (6)

canonical/ubuntu_linux 14.04

canonical/ubuntu_linux 15.10

nettle_project/nettle < 3.1.1

opensuse/leap 42.1

opensuse/opensuse 13.1

opensuse/opensuse 13.2

Published Feb 23, 2016

Tracked Since Feb 18, 2026