CVE-2015-8803 Weak cryptography in n/a

What is CVE-2015-8803?

CVE-2015-8803 is a critical vulnerability in Canonical Ubuntu Linux, published on 23 Feb 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-310, CWE-254

Which versions are affected by CVE-2015-8803?

It affects 4 products.

Products include Canonical Ubuntu Linux, Nettle Project Nettle, Opensuse Leap, Opensuse Opensuse.

How do I fix CVE-2015-8803?

Upgrade to a fixed version.

Is CVE-2015-8803 being exploited?

There is no known exploitation of CVE-2015-8803 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2015-8803, GHSA-9224-822v-4vv3, UBUNTU-CVE-2015-8803.