CVE-2019-18678 — HTTP Request Smuggling in Squid

CWE-444 — HTTP Request SmugglingCWE-20 — Improper Input Validation10 documents9 sources
Severity
5.3MEDIUMNVD
EPSS
10.0%
top 6.96%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
SquidSquid-cache SquidCanonical Ubuntu Linux+2 more
Timeline
PublishedNov 26
Latest updateMay 24

Description

An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled content at arbitrary URLs. Effects are isolated to software between the attacker client and Squid. There are no effects on Squid itself, nor on any upstream servers. The issue is related to a request…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages2 packages

▶Debiansquid/squid< 4.9-1+3
▶NVDsquid-cache/squid3.0 — 3.5.28+1

Also affects: Debian Linux 8.0, Fedora 30, 31, Ubuntu Linux 16.04, 18.04, 19.04, 19.10

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-jvgf-c7c2-w98p: An issue was discovered in Squid 3↗2022-05-24
▶
CVEList
CVE-2019-18678: An issue was discovered in Squid 3↗2019-11-26
▶
OSV
CVE-2019-18678: An issue was discovered in Squid 3↗2019-11-26
▶

📋Vendor Advisories

3
Ubuntu
Squid vulnerabilities↗2019-12-04
▶
Red Hat
squid: HTTP Request Splitting issue in HTTP message processing↗2019-11-05
▶
Debian
CVE-2019-18678: squid - An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to...↗2019
▶

💬Community

2
Bugzilla
CVE-2019-18678 squid: HTTP Request Splitting issue in HTTP message processing↗2019-11-08
▶
Bugzilla
CVE-2019-18678 squid: HTTP Request Splitting issue in HTTP message processing [fedora-all]↗2019-11-08
▶
CVE-2019-18678 — HTTP Request Smuggling in Squid | cvebase