Vulnerability Details : CVE-2021-27293
Potential exploit
RestSharp < 106.11.8-alpha.0.13 uses a regular expression which is vulnerable to Regular Expression Denial of Service (ReDoS) when converting strings into DateTimes. If a server responds with a malicious string, the client using RestSharp will be stuck processing it for an exceedingly long time. Thus the remote server can trigger Denial of Service.
Vulnerability category: Denial of service
Products affected by CVE-2021-27293
- cpe:2.3:a:restsharp:restsharp:*:*:*:*:*:*:*:*
- cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.10:*:*:*:*:*:*
- cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.11:*:*:*:*:*:*
- cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.12:*:*:*:*:*:*
- cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.2:*:*:*:*:*:*
- cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.3:*:*:*:*:*:*
- cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.4:*:*:*:*:*:*
- cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.6:*:*:*:*:*:*
- cpe:2.3:a:restsharp:restsharp:106.11.8:alpha0.7:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-27293
0.46%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 61 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-27293
| 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-2021-27293
-
The product compares two entities in a security-relevant context, but the comparison is incorrect, which may lead to resultant weaknesses.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-27293
-
https://github.com/restsharp/RestSharp/issues/1556
CVE-2021-27293: Fix NewDateRegex · Issue #1556 · restsharp/RestSharp · GitHubExploit;Patch;Third Party Advisory
-
https://restsharp.dev/
RestSharpProduct
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