CVE-2015-2318

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.

Category

8.1
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.36% Top 25%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory mono-project.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.ubuntu.com/usn/USN-2547-1 third party advisory vendor advisory
https://mitls.org/pages/attacks/SMACK#skip third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1202869 third party advisory issue tracking
http://www.securityfocus.com/bid/73253 third party advisory vdb entry
http://www.openwall.com/lists/oss-security/2015/03/17/9 third party advisory mailing list
http://www.mono-project.com/news/2015/03/07/mono-tls-vulnerability/ vendor advisory
https://www.debian.org/security/2015/dsa-3202 third party advisory vendor advisory
https://github.com/mono/mono/commit/1509226c41d74194c146deb173e752b8d3cdeec4 third party advisory

Frequently Asked Questions

What is the severity of CVE-2015-2318?
CVE-2015-2318 has been scored as a high severity vulnerability.
How to fix CVE-2015-2318?
To fix CVE-2015-2318, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-2318 being actively exploited in the wild?
It is possible that CVE-2015-2318 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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