CVE-2020-15810
published 2020-09-02CVE-2020-15810: 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…
PriorityP341medium6.5CVSS 3.1
AVNACLPRLUINSUCNIHAN
EPSS
2.53%
82.9th percentile
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 servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream.
Affected
18 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | squid | < squid 4.13-1 (bookworm) | squid 4.13-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| opensuse | leap | — | — |
| opensuse | leap | — | — |
| squid-cache | squid | < 4.13 | 4.13 |
| squid-cache | squid | >= 5.0 < 5.0.4 | 5.0.4 |
| squid | squid | >= 0 < 4.13-1 | 4.13-1 |
| squid | squid | >= 0 < 4.13-1 | 4.13-1 |
| squid | squid | >= 0 < 4.13-1 | 4.13-1 |
| squid | squid | >= 0 < 4.13-1 | 4.13-1 |
| squid | squid | >= 0 < 4.10-1ubuntu1.2 | 4.10-1ubuntu1.2 |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
nvdv2.03.5LOWAV:N/AC:M/Au:S/C:N/I:P/A:N
osv8.8HIGH
vendor_ubuntu9.9CRITICAL
vendor_debian6.5MEDIUM
vendor_redhat6.5MEDIUM
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Ubuntu
Squid vulnerabilities
vendor_ubuntu·2020-09-28·CVSS 9.9
CVE-2020-15049 [CRITICAL] Squid vulnerabilities
Title: Squid vulnerabilities
Summary: Several security issues were fixed in Squid.
Alex Rousskov and Amit Klein discovered that Squid incorrectly handled
certain Content-Length headers. A remote attacker could possibly use this
issue to perform an HTTP request smuggling attack, resulting in cache
poisoning. (CVE-2020-15049)
Amit Klein discovered that Squid incorrectly validated certain data. A
remote attacker could possibly use this issue to perform an HTTP request
smuggling attack, resulting in cache poisoning. (CVE-2020-15810)
Régis Leroy discovered that Squid incorrectly validated certain data. A
remote attacker could possibly use this issue to perform an HTTP request
splitting attack, resulting in cache poisoning. (CVE-2020-15811)
Lubos Uhliarik discovered that Squid incorrectly h
Ubuntu
Squid vulnerabilities
vendor_ubuntu·2020-08-27·CVSS 6.5
CVE-2020-15810 [MEDIUM] Squid vulnerabilities
Title: Squid vulnerabilities
Summary: Several security issues were fixed in Squid.
Amit Klein discovered that Squid incorrectly validated certain data. A
remote attacker could possibly use this issue to perform an HTTP request
smuggling attack, resulting in cache poisoning. (CVE-2020-15810)
Régis Leroy discovered that Squid incorrectly validated certain data. A
remote attacker could possibly use this issue to perform an HTTP request
splitting attack, resulting in cache poisoning. (CVE-2020-15811)
Lubos Uhliarik discovered that Squid incorrectly handled certain Cache
Digest response messages sent by trusted peers. A remote attacker could
possibly use this issue to cause Squid to consume resources, resulting in a
denial of service. (CVE-2020-24606)
Instructions: In general, a standard s
Red Hat
squid: HTTP Request Smuggling could result in cache poisoning
vendor_redhat·2020-08-23·CVSS 6.5
CVE-2020-15810 [MEDIUM] CWE-444 squid: HTTP Request Smuggling could result in cache poisoning
squid: HTTP Request Smuggling could result in cache poisoning
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 servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream.
A flaw was foun
Debian
CVE-2020-15810: squid - An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorr...
vendor_debian·2020·CVSS 6.5
CVE-2020-15810 [MEDIUM] CVE-2020-15810: squid - An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorr...
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 servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream.
Scope: local
bookworm: resolved (fixed in 4.13-1)
bullseye: resolved (fixed in
OSV
squid3 vulnerabilities
osv·2020-09-28·CVSS 8.8
CVE-2020-15049 [HIGH] squid3 vulnerabilities
squid3 vulnerabilities
Alex Rousskov and Amit Klein discovered that Squid incorrectly handled
certain Content-Length headers. A remote attacker could possibly use this
issue to perform an HTTP request smuggling attack, resulting in cache
poisoning. (CVE-2020-15049)
Amit Klein discovered that Squid incorrectly validated certain data. A
remote attacker could possibly use this issue to perform an HTTP request
smuggling attack, resulting in cache poisoning. (CVE-2020-15810)
Régis Leroy discovered that Squid incorrectly validated certain data. A
remote attacker could possibly use this issue to perform an HTTP request
splitting attack, resulting in cache poisoning. (CVE-2020-15811)
Lubos Uhliarik discovered that Squid incorrectly handled certain Cache
Digest response messages sent by trusted
OSV
CVE-2020-15810: An issue was discovered in Squid before 4
osv·2020-09-02·CVSS 6.5
CVE-2020-15810 [MEDIUM] CVE-2020-15810: An issue was discovered in Squid before 4
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 servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream.
OSV
squid vulnerabilities
osv·2020-08-27·CVSS 6.5
CVE-2020-15810 [MEDIUM] squid vulnerabilities
squid vulnerabilities
Amit Klein discovered that Squid incorrectly validated certain data. A
remote attacker could possibly use this issue to perform an HTTP request
smuggling attack, resulting in cache poisoning. (CVE-2020-15810)
Régis Leroy discovered that Squid incorrectly validated certain data. A
remote attacker could possibly use this issue to perform an HTTP request
splitting attack, resulting in cache poisoning. (CVE-2020-15811)
Lubos Uhliarik discovered that Squid incorrectly handled certain Cache
Digest response messages sent by trusted peers. A remote attacker could
possibly use this issue to cause Squid to consume resources, resulting in a
denial of service. (CVE-2020-24606)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-15810 squid: HTTP Request Smuggling could result in cache poisoning [fedora-all]
bugzilla·2020-08-24·CVSS 6.5
CVE-2020-15810 [MEDIUM] CVE-2020-15810 squid: HTTP Request Smuggling could result in cache poisoning [fedora-all]
CVE-2020-15810 squid: HTTP Request Smuggling could result in cache poisoning [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple suppor
Bugzilla
CVE-2020-15810 squid: HTTP Request Smuggling could result in cache poisoning
bugzilla·2020-08-24·CVSS 6.5
CVE-2020-15810 [MEDIUM] CVE-2020-15810 squid: HTTP Request Smuggling could result in cache poisoning
CVE-2020-15810 squid: HTTP Request Smuggling could result in cache poisoning
Due to incorrect data validation Squid is vulnerable to HTTP Request Smuggling
attacks against HTTP and HTTPS traffic. This leads to cache poisoning.
Upstream Advisory:
https://github.com/squid-cache/squid/security/advisories/GHSA-3365-q9qx-f98m
Affected Versions: 2.5-3.5.28, 4.0-4.12, 5.0.1-5.0.3
Fixed Versions: 4.13, 5.0.4
Discussion:
Created squid tracking bugs for this issue:
Affects: fedora-all [bug 1871701]
---
Upstream fix:
https://github.com/squid-cache/squid/commit/9c8e2a71aa1d3c159a319d9365c346c48dc783a5
---
Mitigation:
Disable the relaxed HTTP parser in `squid.conf`:
```
relaxed_header_parser off
```
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8.
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.htmlhttps://github.com/squid-cache/squid/security/advisories/GHSA-3365-q9qx-f98mhttps://lists.debian.org/debian-lts-announce/2020/10/msg00005.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/https://security.netapp.com/advisory/ntap-20210219-0007/https://security.netapp.com/advisory/ntap-20210226-0006/https://security.netapp.com/advisory/ntap-20210226-0007/https://usn.ubuntu.com/4477-1/https://usn.ubuntu.com/4551-1/https://www.debian.org/security/2020/dsa-4751http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.htmlhttps://github.com/squid-cache/squid/security/advisories/GHSA-3365-q9qx-f98mhttps://lists.debian.org/debian-lts-announce/2020/10/msg00005.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/https://security.netapp.com/advisory/ntap-20210219-0007/https://security.netapp.com/advisory/ntap-20210226-0006/https://security.netapp.com/advisory/ntap-20210226-0007/https://usn.ubuntu.com/4477-1/https://usn.ubuntu.com/4551-1/https://www.debian.org/security/2020/dsa-4751
2020-09-02
Published