Vulnerability Details : CVE-2021-22959
Potential exploit
The parser in accepts requests with a space (SP) right after the header name before the colon. This can lead to HTTP Request Smuggling (HRS) in llhttp < v2.1.4 and < v6.0.6.
Products affected by CVE-2021-22959
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:graalvm:20.3.4:*:*:*:enterprise:*:*:*
- cpe:2.3:a:oracle:graalvm:21.3.0:*:*:*:enterprise:*:*:*
- cpe:2.3:a:llhttp:llhttp:*:*:*:*:*:node.js:*:*
- cpe:2.3:a:llhttp:llhttp:*:*:*:*:*:node.js:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-22959
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 62 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-22959
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.4
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:P/A:N |
10.0
|
4.9
|
NIST | |
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
3.9
|
2.5
|
NIST |
CWE ids for CVE-2021-22959
-
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.Assigned by:
- nvd@nist.gov (Primary)
- support@hackerone.com (Secondary)
References for CVE-2021-22959
-
https://www.oracle.com/security-alerts/cpujan2022.html
Oracle Critical Patch Update Advisory - January 2022Patch;Third Party Advisory
-
https://hackerone.com/reports/1238709
#1238709 HTTP Request Smuggling due to accepting space before colonExploit;Issue Tracking;Third Party Advisory
-
https://www.debian.org/security/2022/dsa-5170
Debian -- Security Information -- DSA-5170-1 nodejsMailing List;Third Party Advisory
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