CVE-2015-3193 Information disclosure in n/a

What is CVE-2015-3193?

CVE-2015-3193 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 6 Dec 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Montgomery squaring implementation in crypto/bn/asm/x86_64-mont5.pl in OpenSSL 1.0.2 before 1.0.2e on the x86_64 platform, as used by the BN_mod_exp function, mishandles carry propagation and produces incorrect output, which makes it easier for remote attackers to obtain sensitive private-key information via an attack against use of a (1) Diffie-Hellman (DH) or (2) Diffie-Hellman Ephemeral (DHE) ciphersuite.

Weakness: CWE-200

Which versions are affected by CVE-2015-3193?

It affects 3 products.

Products include Canonical Ubuntu Linux, Nodejs Node.js, Openssl Openssl.

How do I fix CVE-2015-3193?

Upgrade to a fixed version.

Is CVE-2015-3193 being exploited?

There is no known exploitation of CVE-2015-3193 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-2015-3193, GHSA-8m9h-2gxv-h3m7.