Improper Certificate Validation Affecting mono package, versions <3.2.8+dfsg-4ubuntu2.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1410-MONO-301701
- published8 Jan 2018
- disclosed8 Jan 2018
Introduced: 8 Jan 2018
CVE-2015-2319 (opens in a new tab)How to fix?
Upgrade Ubuntu:14.10 mono to version 3.2.8+dfsg-4ubuntu2.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream mono package and not the mono package as distributed by Ubuntu.
See How to fix? for Ubuntu:14.10 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2015-2319
- https://www.debian.org/security/2015/dsa-3202
- https://security-tracker.debian.org/tracker/CVE-2015-2319
- https://github.com/mono/mono/commit/9c38772f094168d8bfd5bc73bf8925cd04faad10
- https://mitls.org/pages/attacks/SMACK#freak
- http://www.mono-project.com/news/2015/03/07/mono-tls-vulnerability/
- http://www.openwall.com/lists/oss-security/2015/03/17/9
- https://bugzilla.redhat.com/show_bug.cgi?id=1202869
- http://www.securityfocus.com/bid/73250
- http://www.ubuntu.com/usn/USN-2547-1