CVE-2015-8805

Publication date 31 December 2015

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
nettle 17.04 zesty
Not affected
16.10 yakkety
Not affected
16.04 LTS xenial
Not affected
15.10 wily
Fixed 3.1.1-4ubuntu0.1
15.04 vivid Ignored end of life
14.04 LTS trusty
Fixed 2.7.1-1ubuntu0.1
12.04 LTS precise
Not affected

Notes

mdeslaur

same patch as CVE-2015-8803

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
nettle

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

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

References

Related Ubuntu Security Notices (USN)

    • USN-2897-1
    • Nettle vulnerabilities
    • 15 February 2016

Other references

Access our resources on patching vulnerabilities