Vulnerability Details : CVE-2020-27813
An integer overflow vulnerability exists with the length of websocket frames received via a websocket connection. An attacker would use this flaw to cause a denial of service attack on an HTTP Server allowing websocket connections.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2020-27813
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:gorillatoolkit:websocket:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27813
0.52%
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-2020-27813
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-27813
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The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2020-27813
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https://bugzilla.redhat.com/show_bug.cgi?id=1902111
1902111 – (CVE-2020-27813) CVE-2020-27813 golang-github-gorilla-websocket: integer overflow leads to denial of serviceIssue Tracking;Third Party Advisory
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https://lists.debian.org/debian-lts-announce/2021/01/msg00008.html
[SECURITY] [DLA 2520-1] golang-websocket security updateMailing List;Third Party Advisory
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https://github.com/gorilla/websocket/security/advisories/GHSA-jf24-p9p9-4rjh
Potential DoS Vector in gorilla/websocket <= v1.4.0 · Advisory · gorilla/websocket · GitHubThird Party Advisory
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https://lists.debian.org/debian-lts-announce/2023/05/msg00012.html
[SECURITY] [DLA 3420-1] golang-websocket security update
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