CVE-2021-46784
Squid Denial of Service Buffer Exhaustion
Description
In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses.
INFO
Published Date :
July 17, 2022, 10:15 p.m.
Last Modified :
Oct. 22, 2023, 12:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2021-46784 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-46784.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2023/10/13/1 | |
| http://www.openwall.com/lists/oss-security/2023/10/13/10 | |
| http://www.openwall.com/lists/oss-security/2023/10/21/1 | |
| http://www.squid-cache.org/Versions/v4/changesets/SQUID-2021_7.patch | Broken Link |
| http://www.squid-cache.org/Versions/v5/changesets/SQUID-2021_7.patch | Patch Vendor Advisory |
| https://github.com/squid-cache/squid/commit/5e2ea2b13bd98f53e29964ca26bb0d602a8a12b9 | Patch Third Party Advisory |
| https://github.com/squid-cache/squid/security/advisories/GHSA-f5cp-6rh3-284w | Mitigation Patch Third Party Advisory |
| https://security-tracker.debian.org/tracker/CVE-2021-46784 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20221223-0007/ | 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).
A detailed repository of vulnerabilities that I discovered in The Squid Caching Proxy.
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-46784 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-46784 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 -
CVE Modified by [email protected]
Oct. 22, 2023
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2023/10/21/1 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 13, 2023
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2023/10/13/10 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 13, 2023
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2023/10/13/1 [No Types Assigned] -
CWE Remap by [email protected]
Aug. 08, 2023
Action Type Old Value New Value Changed CWE CWE-400 CWE-617 -
Modified Analysis by [email protected]
Jan. 19, 2023
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20221223-0007/ No Types Assigned https://security.netapp.com/advisory/ntap-20221223-0007/ Third Party Advisory -
CVE Modified by [email protected]
Dec. 23, 2022
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20221223-0007/ [No Types Assigned] -
Initial Analysis by [email protected]
Jul. 27, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.squid-cache.org/Versions/v4/changesets/SQUID-2021_7.patch No Types Assigned http://www.squid-cache.org/Versions/v4/changesets/SQUID-2021_7.patch Broken Link Changed Reference Type http://www.squid-cache.org/Versions/v5/changesets/SQUID-2021_7.patch No Types Assigned http://www.squid-cache.org/Versions/v5/changesets/SQUID-2021_7.patch Patch, Vendor Advisory Changed Reference Type https://github.com/squid-cache/squid/commit/5e2ea2b13bd98f53e29964ca26bb0d602a8a12b9 No Types Assigned https://github.com/squid-cache/squid/commit/5e2ea2b13bd98f53e29964ca26bb0d602a8a12b9 Patch, Third Party Advisory Changed Reference Type https://github.com/squid-cache/squid/security/advisories/GHSA-f5cp-6rh3-284w No Types Assigned https://github.com/squid-cache/squid/security/advisories/GHSA-f5cp-6rh3-284w Mitigation, Patch, Third Party Advisory Changed Reference Type https://security-tracker.debian.org/tracker/CVE-2021-46784 No Types Assigned https://security-tracker.debian.org/tracker/CVE-2021-46784 Third Party Advisory Added CWE NIST CWE-400 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) 4.17 *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 5.0 up to (excluding) 5.6 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-46784 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-2021-46784
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
3.91 }} 1.92%
score
0.92145
percentile