CVE-2021-22959

medium

Description

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.

References

https://hackerone.com/reports/1238709

https://www.oracle.com/security-alerts/cpujan2022.html

https://www.debian.org/security/2022/dsa-5170

Details

Source: MITRE

Published: 2021-11-15

Updated: 2022-06-28

Type: CWE-444

Risk Information

CVSS v2

Base Score: 6.4

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N

Impact Score: 4.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Impact Score: 2.5

Exploitability Score: 3.9

Severity: MEDIUM