CVE-2019-20786

Public Exploit

Description

handleIncomingPacket in conn.go in Pion DTLS before 1.5.2 lacks a check for application data with epoch 0, which allows remote attackers to inject arbitrary unencrypted data after handshake completion.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.46% Top 25%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory usenix.org Third-Party Advisory usenix.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.usenix.org/system/files/sec20fall_fiterau-brostean_prepub.pdf third party advisory exploit
https://www.usenix.org/conference/usenixsecurity20/presentation/fiterau-brostean third party advisory
https://github.com/pion/dtls/commit/fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0 third party advisory patch
https://github.com/pion/dtls/compare/v1.5.1...v1.5.2 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2019-20786?
CVE-2019-20786 has been scored as a critical severity vulnerability.
How to fix CVE-2019-20786?
To fix CVE-2019-20786, 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-2019-20786 being actively exploited in the wild?
It is possible that CVE-2019-20786 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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