CVE-2018-1000027
Published: 29 January 2018
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.
Priority
Status
Package | Release | Status |
---|---|---|
squid3 Launchpad, Ubuntu, Debian |
upstream |
Needs triage
|
xenial |
Released
(3.5.12-1ubuntu7.5)
|
|
artful |
Released
(3.5.23-5ubuntu1.1)
|
|
bionic |
Released
(3.5.23-5ubuntu2)
|
|
cosmic |
Does not exist
|
|
disco |
Does not exist
|
|
trusty |
Released
(3.3.8-1ubuntu6.11)
|
|
Patches: upstream: http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2018_2.patch |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |