Vulnerability Details : CVE-2020-36406
uWebSockets 18.11.0 and 18.12.0 has a stack-based buffer overflow in uWS::TopicTree::trimTree (called from uWS::TopicTree::unsubscribeAll). NOTE: the vendor's position is that this is "a minor issue or not even an issue at all" because the developer of an application (that uses uWebSockets) should not be allowing the large number of triggered topics to accumulate
Vulnerability category: Overflow
Products affected by CVE-2020-36406
- cpe:2.3:a:uwebsockets_project:uwebsockets:18.11.0:*:*:*:*:node.js:*:*
- cpe:2.3:a:uwebsockets_project:uwebsockets:18.12.0:*:*:*:*:node.js:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-36406
0.56%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-36406
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2020-36406
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-36406
-
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25381
25381 - uwebsockets:TopicTree: Stack-buffer-overflow in uWS::TopicTree::trimTree - oss-fuzzExploit;Issue Tracking;Patch;Third Party Advisory
-
https://github.com/uNetworking/uWebSockets/commit/03fca626a95130ab80f86adada54b29d27242759
Fix overflow of triggered topics · uNetworking/uWebSockets@03fca62 · GitHubPatch;Third Party Advisory
-
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/uwebsockets/OSV-2020-1695.yaml
oss-fuzz-vulns/OSV-2020-1695.yaml at main · google/oss-fuzz-vulns · GitHubThird Party Advisory
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