CVE-2015-2318 Security feature bypass in n/a

What is CVE-2015-2318?

CVE-2015-2318 is a high-severity vulnerability in Debian Debian Linux, published on 8 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The TLS stack in Mono before 3.12.1 allows man-in-the-middle attackers to conduct message skipping attacks and consequently impersonate clients by leveraging missing handshake state validation, aka a "SMACK SKIP-TLS" issue.

Weakness: CWE-295

Which versions are affected by CVE-2015-2318?

It affects 2 products.

Products include Debian Debian Linux, Mono-Project Mono.

How do I fix CVE-2015-2318?

Upgrade to a fixed version.

Is CVE-2015-2318 being exploited?

There is no known exploitation of CVE-2015-2318 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2015-2318, GHSA-xv64-wpfr-x2m3, UBUNTU-CVE-2015-2318.