CVE Vulnerability

CVE-2018-1000027

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/squid-cache/squid/pull/129/files Third Party Advisory
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2018_2.patch 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/Advisories/SQUID-2018_2.txt Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/02/msg00002.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/02/msg00001.html Mailing List Third Party Advisory
https://www.debian.org/security/2018/dsa-4122 Third Party Advisory
https://usn.ubuntu.com/3557-1/ Third Party Advisory
https://usn.ubuntu.com/4059-2/
Configurations

Configuration 1

cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
Information

Published : 2018-02-09 11:29

Updated : 2019-07-17 04:15

NVD link : CVE-2018-1000027

Mitre link : CVE-2018-1000027

Products Affected
No products.
CWE
CWE-476