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Vulnerability Details : CVE-2019-12525

An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token's value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. Squid never checks whether the value is just a single quote (which would satisfy its requirements), leading to a memcpy of its length minus 1.
Publish Date : 2019-07-11 Last Update Date : 2022-04-26
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- CVSS Scores & Vulnerability Types

CVSS Score
7.5
Confidentiality Impact Partial (There is considerable informational disclosure.)
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 Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 787

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:2040: squid security update (Important) oval:com.redhat.rhsa:def:20202040 unix
RHSA-2020:2041: squid:4 security update (Important) oval:com.redhat.rhsa:def:20202041 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-2019-12525

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 19.04 * * * Version Details Vulnerabilities
5 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
6 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
7 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
8 OS Fedoraproject Fedora 29 * * * Version Details Vulnerabilities
9 OS Opensuse Leap 15.0 * * * Version Details Vulnerabilities
10 OS Opensuse Leap 15.1 * * * Version Details Vulnerabilities
11 Application Squid-cache Squid * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 4
Debian Debian Linux 3
Fedoraproject Fedora 1
Opensuse Leap 2
Squid-cache Squid 1

- References For CVE-2019-12525

https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html
MLIST [debian-lts-announce] 20190720 [SECURITY] [DLA 1858-1] squid3 security update
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
SUSE openSUSE-SU-2019:2541
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html
SUSE openSUSE-SU-2019:2540
https://seclists.org/bugtraq/2019/Aug/42
BUGTRAQ 20190825 [SECURITY] [DSA 4507-1] squid security update
https://www.debian.org/security/2019/dsa-4507
DEBIAN DSA-4507
http://www.squid-cache.org/Versions/v4/changesets/ CONFIRM
http://www.squid-cache.org/Versions/v4/changesets/squid-4-7f73e9c5d17664b882ed32590e6af310c247f320.patch CONFIRM
https://lists.fedoraproject.org/archives/list/[email protected]/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
FEDORA FEDORA-2019-cb50bcc189
https://usn.ubuntu.com/4065-2/
UBUNTU USN-4065-2
https://usn.ubuntu.com/4065-1/
UBUNTU USN-4065-1
https://github.com/squid-cache/squid/commits/v4 CONFIRM
https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
MLIST [debian-lts-announce] 20200710 [SECURITY] [DLA 2278-1] squid3 security update

- Metasploit Modules Related To CVE-2019-12525

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