CVE-2015-2319

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-01-08 · updated 2026-06-17
Weakness: CWE-295

Description

The TLS stack in Mono before 3.12.1 makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue, a different vulnerability than CVE-2015-0204.

Affected products

Mono-Project Mono: before 3.12.1 — fixed in 3.12.1

How to fix

Upgrade to a fixed version: Mono-Project Mono 3.12.1. Check the vendor advisory for mitigations.

References

http://www.mono-project.com/news/2015/03/07/mono-tls-vulnerability/
http://www.openwall.com/lists/oss-security/2015/03/17/9
http://www.securityfocus.com/bid/73250
http://www.ubuntu.com/usn/USN-2547-1
https://bugzilla.redhat.com/show_bug.cgi?id=1202869
https://github.com/mono/mono/commit/9c38772f094168d8bfd5bc73bf8925cd04faad10
https://mitls.org/pages/attacks/SMACK#freak
https://www.debian.org/security/2015/dsa-3202
http://www.mono-project.com/news/2015/03/07/mono-tls-vulnerability/
http://www.openwall.com/lists/oss-security/2015/03/17/9
http://www.securityfocus.com/bid/73250
http://www.ubuntu.com/usn/USN-2547-1

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