CVE-2019-20786
CRITICALCVSS 9.8/10EPSS 2.94%
Last modified
CVE-2019-20786 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.94% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pion | Dtls | < 1.5.2 |
References
- https://github.com/pion/dtls/commit/fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0Patch, Third Party Advisory
- https://github.com/pion/dtls/compare/v1.5.1...v1.5.2Patch, Third Party Advisory
- https://www.usenix.org/conference/usenixsecurity20/presentation/fiterau-brosteanThird Party Advisory
- https://www.usenix.org/system/files/sec20fall_fiterau-brostean_prepub.pdfExploit, Third Party Advisory
- https://github.com/pion/dtls/commit/fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0Patch, Third Party Advisory
- https://github.com/pion/dtls/compare/v1.5.1...v1.5.2Patch, Third Party Advisory
- https://www.usenix.org/conference/usenixsecurity20/presentation/fiterau-brosteanThird Party Advisory
- https://www.usenix.org/system/files/sec20fall_fiterau-brostean_prepub.pdfExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-20786?
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.
How severe is CVE-2019-20786?
CVE-2019-20786 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.94% probability of exploitation in the next 30 days.
How do I fix CVE-2019-20786?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2019
- CVE-2019-20780An issue was discovered on LG mobile devices with Android OS…9.8
- CVE-2019-20781An issue was discovered in LG Bridge before April 2019 on Wi…7.8
- CVE-2019-20782An issue was discovered on LG mobile devices with Android OS…9.8
- CVE-2019-20783An issue was discovered on LG mobile devices with Android OS…9.1
- CVE-2019-20784An issue was discovered on LG mobile devices with Android OS…5.5
- CVE-2019-20785An issue was discovered on LG mobile devices with Android OS…6.8
- CVE-2019-20787Teeworlds before 0.7.4 has an integer overflow when computin…9.8
- CVE-2019-20788libvncclient/cursor.c in LibVNCServer through 0.9.12 has a H…9.8
- CVE-2019-20789Croogo before 3.0.7 allows XSS via the title to admin/menus/…4.8
- CVE-2019-2079In libxaac, there is a possible out of bounds read due to a …6.5
- CVE-2019-20790OpenDMARC through 1.3.2 and 1.4.x, when used with pypolicyd-…9.8
- CVE-2019-20791OpenThread before 2019-12-13 has a stack-based buffer overfl…9.8
Are you affected by CVE-2019-20786?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST