PT-2015-3202 · Gnu+5 · Nettle+5

Hanno Böck · Published 2015-12-31 · Updated 2018-10-30 · CVE-2015-8803

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Nettle versions prior to 3.2

Description The issue is related to the ecc 256 modp function in ecc-256.c, which does not properly handle carry propagation and produces incorrect output in its implementation of the P-256 NIST elliptic curve. This allows attackers to have an unspecified impact via unknown vectors. The vulnerability may allow a remote attacker to affect the confidentiality, integrity, and availability of protected information due to errors in cryptographic transformations.

Recommendations For versions prior to 3.2, update to version 3.2 or later to resolve the issue. As a temporary workaround, consider restricting the use of the ecc 256 modp function until a patch is available.

Fix

Weakness Enumeration

CWE-310

CWE-254

Related Identifiers

ALT-PU-2016-1076

BDU:2016-00709

CESA-2016_2582

CVE-2015-8803

MGASA-2016-0061

OPENSUSE-SU-2024:10339-1

RHSA-2016:2582

RHSA-2016_2582

SUSE-SU-2016:0455-1

SUSE-SU-2016_0455-1

USN-2897-1

Affected Products

Alt Linux

Centos

Nettle

Red Hat

Suse

Ubuntu

References · 63

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6489 · Security Note
• http://lists.opensuse.org/opensuse-updates/2016-02/msg00093.html · Vendor Advisory
• https://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003028.html · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2897-1 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8803 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8804 · Security Note
• http://lists.opensuse.org/opensuse-updates/2016-02/msg00091.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2015-8803 · Security Note
• http://rhn.redhat.com/errata/RHSA-2016-2582.html · Vendor Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176807.html · Vendor Advisory
• http://ubuntu.com/usn/USN-2897-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2015-8803 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2015-8803 · Security Note
• https://bdu.fstec.ru/vul/2016-00609 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2016:0455-1 · Vendor Advisory