CVE-2021-22959 — HTTP Request Smuggling in Llhttp

CWE-444 — HTTP Request Smuggling7 documents7 sources
Severity
6.5MEDIUMNVD
EPSS
0.2%
top 56.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Nodejs NodeNodejsLlhttp+2 more
Timeline
PublishedNov 15
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitability: 3.9 | Impact: 2.5

Affected Packages4 packages

▶NVDllhttp/llhttp3.0.0 — 6.0.6+1
▶CVEListV5nodejs/node4.0 — 4.*+12
▶Debiannodejs/nodejs< 12.22.12~dfsg-1~deb11u1+3
▶NVDoracle/graalvm20.3.4, 21.3.0+1

Also affects: Debian Linux 11.0

Patches

Patch: www.oracle.com ↗Patch: www.oracle.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-mhxq-vjjq-pcvf: The parser in accepts requests with a space (SP) right after the header name before the colon↗2022-05-24
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OSV
CVE-2021-22959: The parser in accepts requests with a space (SP) right after the header name before the colon↗2021-11-15
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CVEList
CVE-2021-22959: The parser in accepts requests with a space (SP) right after the header name before the colon↗2021-11-15
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📋Vendor Advisories

3
Oracle
Oracle Oracle Java SE Risk Matrix: Node (Node.js) — CVE-2021-22959↗2022-01-15
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Red Hat
llhttp: HTTP Request Smuggling due to spaces in headers↗2021-10-12
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Debian
CVE-2021-22959: nodejs - The parser in accepts requests with a space (SP) right after the header name bef...↗2021
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CVE-2021-22959 — HTTP Request Smuggling in Llhttp | cvebase