CVE-2019-12524
Squid Unauthorized Access to Cache Manager via URL Encoding Vulnerability
Description
An issue was discovered in Squid through 4.7. When handling requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which serves detailed server information meant for the maintainer. This rule is implemented via url_regex. The handler for url_regex rules URL decodes an incoming request. This allows an attacker to encode their URL to bypass the url_regex check, and gain access to the blocked resource.
INFO
Published Date :
April 15, 2020, 7:15 p.m.
Last Modified :
Feb. 9, 2021, 4:55 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2019-12524
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-12524.
| URL | Resource |
|---|---|
| https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12524.txt | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210205-0006/ | Third Party Advisory |
| https://usn.ubuntu.com/4446-1/ | Third Party Advisory |
| https://www.debian.org/security/2020/dsa-4682 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-12524 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-12524 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Feb. 09, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html Mailing List, Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20210205-0006/ No Types Assigned https://security.netapp.com/advisory/ntap-20210205-0006/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4446-1/ No Types Assigned https://usn.ubuntu.com/4446-1/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4682 No Types Assigned https://www.debian.org/security/2020/dsa-4682 Third Party Advisory Changed CPE Configuration OR *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (including) 3.5.28 *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 4.0 up to (including) 4.7 *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 5.0 up to (including) 5.0.1 OR *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions up to (including) 4.7 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* -
CVE Modified by [email protected]
Feb. 05, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210205-0006/ [No Types Assigned] -
CVE Modified by [email protected]
Aug. 05, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4446-1/ [No Types Assigned] -
CVE Modified by [email protected]
Jul. 11, 2020
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html [No Types Assigned] -
CVE Modified by [email protected]
May. 09, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4682 [No Types Assigned] -
Initial Analysis by [email protected]
Apr. 29, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12524.txt No Types Assigned https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12524.txt Third Party Advisory Added CWE NIST CWE-306 Added CPE Configuration OR *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (including) 3.5.28 *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 4.0 up to (including) 4.7 *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 5.0 up to (including) 5.0.1
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-12524 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-12524
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.11 }} -0.03%
score
0.84071
percentile