CVE-2018-1000027

CVSS V2 Medium 5 CVSS V3 High 7.5
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.
Overview
  • CVE ID
  • CVE-2018-1000027
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2018-02-09T23:29:00
  • Last Modified Date
  • 2019-07-17T16:15:12
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:* 1 OR 4.0.23
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
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/
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-1000027
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000027
History
Created Old Value New Value Data Type Notes
2022-05-10 17:40:51 Added to TrackCVE
2022-12-03 01:59:48 2018-02-09T23:29Z 2018-02-09T23:29:00 CVE Published Date updated
2022-12-03 01:59:48 2019-07-17T16:15:12 CVE Modified Date updated
2022-12-03 01:59:48 Modified Vulnerability Status updated