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CVE-2019-18678

CVSS v3.1 5.3 (Medium)
53% Progress
CVSS v2.0 5 (Medium)
50% Progress
EPSS 0.75 % (81th)
0.75% Progress
Affected Products 4
Advisories 15
Info CVSS EPSS CAPEC Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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 header containing whitespace between a header name and a colon.

Weaknesses
CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CVE Status
PUBLISHED
CNA
MITRE
Published Date
2019-11-26 17:15:12
(4 years ago)
Updated Date
2023-11-07 03:06:53
(10 months ago)

Affected Products

Canonical

Debian

Fedoraproject

Squid-cache

Configuration #1

    CPE23 From Up To
  Squid-cache Squid from 3.0 version and 3.5.28 and prior versions cpe:2.3:a:squid-cache:squid >= 3.0 <= 3.5.28
  Squid-cache Squid from 4.0 version and 4.8 and prior versions cpe:2.3:a:squid-cache:squid >= 4.0 <= 4.8

Configuration #2

    CPE23 From Up To
  Canonical Ubuntu Linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts
  Canonical Ubuntu Linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts
  Canonical Ubuntu Linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04
  Canonical Ubuntu Linux 19.10 cpe:2.3:o:canonical:ubuntu_linux:19.10

Configuration #3

    CPE23 From Up To
  Debian Linux 8.0 cpe:2.3:o:debian:debian_linux:8.0
  Fedoraproject Fedora 30 cpe:2.3:o:fedoraproject:fedora:30
  Fedoraproject Fedora 31 cpe:2.3:o:fedoraproject:fedora:31