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Vulnerability Details : CVE-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 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.
Publish Date : 2020-09-02 Last Update Date : 2021-03-17
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- CVSS Scores & Vulnerability Types

CVSS Score
3.5
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication ???
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID 444

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:3623: squid:4 security update (Important) oval:com.redhat.rhsa:def:20203623 unix
RHSA-2020:4082: squid security update (Important) oval:com.redhat.rhsa:def:20204082 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2020-15810

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 20.04 * * * Version Details Vulnerabilities
4 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
5 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
6 OS Fedoraproject Fedora 31 * * * Version Details Vulnerabilities
7 OS Fedoraproject Fedora 32 * * * Version Details Vulnerabilities
8 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
9 OS Opensuse Leap 15.1 * * * Version Details Vulnerabilities
10 OS Opensuse Leap 15.2 * * * Version Details Vulnerabilities
11 Application Squid-cache Squid * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 3
Debian Debian Linux 2
Fedoraproject Fedora 3
Opensuse Leap 2
Squid-cache Squid 1

- References For CVE-2020-15810

https://www.debian.org/security/2020/dsa-4751
DEBIAN DSA-4751
https://usn.ubuntu.com/4477-1/
UBUNTU USN-4477-1
https://github.com/squid-cache/squid/security/advisories/GHSA-3365-q9qx-f98m
https://lists.fedoraproject.org/archives/list/[email protected]/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/
FEDORA FEDORA-2020-73af8655eb
https://lists.fedoraproject.org/archives/list/[email protected]/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/
FEDORA FEDORA-2020-63f3bd656e
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
SUSE openSUSE-SU-2020:1346
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
SUSE openSUSE-SU-2020:1369
https://lists.fedoraproject.org/archives/list/[email protected]/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/
FEDORA FEDORA-2020-6c58bff862
https://usn.ubuntu.com/4551-1/
UBUNTU USN-4551-1
https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
MLIST [debian-lts-announce] 20201002 [SECURITY] [DLA 2394-1] squid3 security update
https://security.netapp.com/advisory/ntap-20210219-0007/ CONFIRM
https://security.netapp.com/advisory/ntap-20210226-0006/ CONFIRM
https://security.netapp.com/advisory/ntap-20210226-0007/ CONFIRM

- Metasploit Modules Related To CVE-2020-15810

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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