Vulnerability Details : CVE-2019-20786
Potential exploit
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.
Vulnerability category: BypassGain privilege
Products affected by CVE-2019-20786
- cpe:2.3:a:pion:dtls:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-20786
1.46%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 79 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-20786
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2019-20786
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-20786
-
https://github.com/pion/dtls/commit/fd73a5df2ff0e1fb6ae6a51e2777d7a16cc4f4e0
Assert that ApplicationData has epoch != 0 · pion/dtls@fd73a5d · GitHubPatch;Third Party Advisory
-
https://www.usenix.org/system/files/sec20fall_fiterau-brostean_prepub.pdf
Exploit;Third Party Advisory
-
https://github.com/pion/dtls/compare/v1.5.1...v1.5.2
Comparing v1.5.1...v1.5.2 · pion/dtls · GitHubPatch;Third Party Advisory
-
https://www.usenix.org/conference/usenixsecurity20/presentation/fiterau-brostean
Analysis of DTLS Implementations Using Protocol State Fuzzing | USENIXThird Party Advisory
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