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Vulnerability Details : CVE-2019-12529

An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages.
Publish Date : 2019-07-11 Last Update Date : 2022-04-26
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
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 Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 125

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:4743: squid:4 security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20204743 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-2019-12529

# 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
12 Application Squid-cache Squid 2.7 Stable9 * * Version Details Vulnerabilities
13 Application Squid-cache Squid 2.7 Stable2 * * Version Details Vulnerabilities
14 Application Squid-cache Squid 2.7 Stable1 * * Version Details Vulnerabilities
15 Application Squid-cache Squid 2.7 Stable5 * * Version Details Vulnerabilities
16 Application Squid-cache Squid 2.7 Stable6 * * Version Details Vulnerabilities
17 Application Squid-cache Squid 2.7 Stable3 * * Version Details Vulnerabilities
18 Application Squid-cache Squid 2.7 Stable7 * * Version Details Vulnerabilities
19 Application Squid-cache Squid 2.7 Stable4 * * Version Details Vulnerabilities
20 Application Squid-cache Squid 2.7 Stable8 * * 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 10

- References For CVE-2019-12529
MLIST [debian-lts-announce] 20200710 [SECURITY] [DLA 2278-1] squid3 security update CONFIRM
SUSE openSUSE-SU-2019:2541
SUSE openSUSE-SU-2019:2540 CONFIRM
MLIST [debian-lts-announce] 20190720 [SECURITY] [DLA 1858-1] squid3 security update
UBUNTU USN-4065-2[email protected]/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
FEDORA FEDORA-2019-cb50bcc189
BUGTRAQ 20190825 [SECURITY] [DSA 4507-1] squid security update CONFIRM

- Metasploit Modules Related To CVE-2019-12529

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

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