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 in 3.1.1-4ubuntu0.1
15.04 vivid Ignored end of life
14.04 LTS trusty
Fixed in 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