CVE-2019-18676
Squid Denial of Service Buffer Overflow
Description
An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy. Severity is high due to this vulnerability occurring before normal security checks; any remote client that can reach the proxy port can trivially perform the attack via a crafted URI scheme.
INFO
Published Date :
Nov. 26, 2019, 5:15 p.m.
Last Modified :
Nov. 7, 2023, 3:06 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2019-18676
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-2019-18676.
| URL | Resource |
|---|---|
| http://www.squid-cache.org/Advisories/SQUID-2019_8.txt | Third Party Advisory |
| http://www.squid-cache.org/Versions/v4/changesets/squid-4-fbbdf75efd7a5cc244b4886a9d42ea458c5a3a73.patch | Patch |
| https://bugzilla.suse.com/show_bug.cgi?id=1156329 | Issue Tracking Third Party Advisory |
| https://github.com/squid-cache/squid/pull/275 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/ | |
| https://usn.ubuntu.com/4213-1/ | 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-2019-18676 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-18676 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]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/ -
Modified Analysis by [email protected]
Mar. 03, 2023
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://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 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:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* -
CWE Remap by [email protected]
Aug. 24, 2020
Action Type Old Value New Value Changed CWE CWE-20 CWE-787 -
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]
Dec. 09, 2019
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.squid-cache.org/Advisories/SQUID-2019_8.txt No Types Assigned http://www.squid-cache.org/Advisories/SQUID-2019_8.txt Third Party Advisory Changed Reference Type http://www.squid-cache.org/Versions/v4/changesets/squid-4-fbbdf75efd7a5cc244b4886a9d42ea458c5a3a73.patch No Types Assigned http://www.squid-cache.org/Versions/v4/changesets/squid-4-fbbdf75efd7a5cc244b4886a9d42ea458c5a3a73.patch Patch Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=1156329 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=1156329 Issue Tracking, Third Party Advisory Changed Reference Type https://github.com/squid-cache/squid/pull/275 No Types Assigned https://github.com/squid-cache/squid/pull/275 Patch, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/ Mailing List, Third Party Advisory Changed Reference Type https://usn.ubuntu.com/4213-1/ No Types Assigned https://usn.ubuntu.com/4213-1/ Third Party Advisory Added CWE NIST CWE-20 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) 4.8 Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 05, 2019
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/ [No Types Assigned] -
CVE Modified by [email protected]
Dec. 05, 2019
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/ [No Types Assigned] -
CVE Modified by [email protected]
Dec. 04, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4213-1/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-18676 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-2019-18676
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.78 }} -0.70%
score
0.87742
percentile