CVE-2020-15810 — HTTP Request Smuggling in Squid

CWE-444 — HTTP Request Smuggling11 documents7 sources
Severity
6.5MEDIUMNVD
OSV8.8
EPSS
0.2%
top 56.37%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
SquidSquid-cache SquidCanonical Ubuntu Linux+3 more
Timeline
PublishedSep 2
Latest updateSep 28

Description

An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Smuggling attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the proxy cache and any downstream caches with content from an arbitrary source. When configured for relaxed header parsing (the default), Squid relays headers containing whitespace characters to upstream s…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NExploitability: 2.8 | Impact: 3.6

Affected Packages4 packages

▶NVDsquid-cache/squid5.0 — 5.0.4+1
▶Debiansquid/squid< 4.13-1+3
▶Ubuntusquid/squid< 4.10-1ubuntu1.2
▶NVDopensuse/leap15.1, 15.2+1

Also affects: Debian Linux 10.0, 9.0, Fedora 31, 32, 33, Ubuntu Linux 16.04, 18.04, 20.04

🔴Vulnerability Details

4
OSV
squid3 vulnerabilities↗2020-09-28
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CVEList
CVE-2020-15810: An issue was discovered in Squid before 4↗2020-09-02
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OSV
CVE-2020-15810: An issue was discovered in Squid before 4↗2020-09-02
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OSV
squid vulnerabilities↗2020-08-27
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📋Vendor Advisories

4
Ubuntu
Squid vulnerabilities↗2020-09-28
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Ubuntu
Squid vulnerabilities↗2020-08-27
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Red Hat
squid: HTTP Request Smuggling could result in cache poisoning↗2020-08-23
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Debian
CVE-2020-15810: squid - An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorr...↗2020
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💬Community

2
Bugzilla
CVE-2020-15810 squid: HTTP Request Smuggling could result in cache poisoning [fedora-all]↗2020-08-24
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Bugzilla
CVE-2020-15810 squid: HTTP Request Smuggling could result in cache poisoning↗2020-08-24
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CVE-2020-15810 — HTTP Request Smuggling in Squid | cvebase