CVE-2018-1000027
Squid HTTP Caching Proxy NULL Pointer Dereference Denial of Service Vulnerability
Description
The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4.0.23 contains a NULL Pointer Dereference vulnerability in HTTP Response X-Forwarded-For header processing that can result in Denial of Service to all clients of the proxy. This attack appear to be exploitable via Remote HTTP server responding with an X-Forwarded-For header to certain types of HTTP request. This vulnerability appears to have been fixed in 4.0.23 and later.
INFO
Published Date :
Feb. 9, 2018, 11:29 p.m.
Last Modified :
July 17, 2019, 4:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2018-1000027 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2018-1000027
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-2018-1000027.
| URL | Resource |
|---|---|
| http://www.squid-cache.org/Advisories/SQUID-2018_2.txt | Patch Vendor Advisory |
| http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2018_2.patch | Patch Vendor Advisory |
| http://www.squid-cache.org/Versions/v4/changesets/SQUID-2018_2.patch | Patch Vendor Advisory |
| https://github.com/squid-cache/squid/pull/129/files | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2018/02/msg00001.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2018/02/msg00002.html | Mailing List Third Party Advisory |
| https://usn.ubuntu.com/3557-1/ | Third Party Advisory |
| https://usn.ubuntu.com/4059-2/ | |
| https://www.debian.org/security/2018/dsa-4122 | 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).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-1000027 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-1000027 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]
Jul. 17, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4059-2/ [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 26, 2019
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/02/msg00002.html Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/02/msg00002.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/02/msg00001.html Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/02/msg00001.html Mailing List, Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3557-1/ No Types Assigned https://usn.ubuntu.com/3557-1/ Third Party Advisory Changed CPE Configuration OR *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (including) 3.5.27 *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 4.0 up to (including) 4.0.22 OR *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions up to (excluding) 4.0.23 Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 16, 2018
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3557-1/ [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 07, 2018
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/squid-cache/squid/pull/129/files No Types Assigned https://github.com/squid-cache/squid/pull/129/files Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/02/msg00002.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/02/msg00002.html Third Party Advisory Changed Reference Type http://www.squid-cache.org/Versions/v4/changesets/SQUID-2018_2.patch No Types Assigned http://www.squid-cache.org/Versions/v4/changesets/SQUID-2018_2.patch Patch, Vendor Advisory Changed Reference Type http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2018_2.patch No Types Assigned http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2018_2.patch Patch, Vendor Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/02/msg00001.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/02/msg00001.html Third Party Advisory Changed Reference Type https://www.debian.org/security/2018/dsa-4122 No Types Assigned https://www.debian.org/security/2018/dsa-4122 Third Party Advisory Changed Reference Type http://www.squid-cache.org/Advisories/SQUID-2018_2.txt No Types Assigned http://www.squid-cache.org/Advisories/SQUID-2018_2.txt Patch, Vendor Advisory Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (including) 3.5.27 *cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* versions from (including) 4.0 up to (including) 4.0.22 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 24, 2018
Action Type Old Value New Value Added Reference https://www.debian.org/security/2018/dsa-4122 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 11, 2018
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2018/02/msg00002.html [No Types Assigned] Added Reference https://lists.debian.org/debian-lts-announce/2018/02/msg00001.html [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-2018-1000027 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-2018-1000027
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.56 }} -0.42%
score
0.85644
percentile