CVE-2018-1000027
Scores
EPSS
Percentile: 66.0%
CVSS
CVSS Score: 6.8/10
All CVSS Scores
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
High (H)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Changed (C)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
None (N)
Measures the impact to the confidentiality of information
Integrity Impact
None (N)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Authentication
None (N)
Describes the level of privileges an attacker must possess
Confidentiality Impact
None (N)
Measures the impact to the confidentiality of information
Integrity Impact
None (N)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Partial
Measures the impact to the availability of the impacted component
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.
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Sources
CWEs
Related Vulnerabilities
Vulnerable Software (10)
Type: Configuration
Product: squid
Operating System: debian
{ "fixed": "4.1-1"}
Source: debian
Type: Configuration
Product: squid
Operating System: rhel 7
{ "fixed": "3.5.20-15.el7"}
Source: redhat
Type: Configuration
Product: squid3
Operating System: ubuntu artful 17.10
{ "fixed": "3.5.23-5ubuntu1.1"}
Source: ubuntu
Type: Configuration
Product: squid3
Operating System: ubuntu bionic 18.04
{ "fixed": "3.5.23-5ubuntu2"}
Source: ubuntu
Type: Configuration
Product: squid3
Operating System: ubuntu trusty 14.04
{ "fixed": "3.3.8-1ubuntu6.11"}
Source: ubuntu
Type: Configuration
Product: squid3
Operating System: ubuntu xenial 16.04
{ "fixed": "3.5.12-1ubuntu7.5"}
Source: ubuntu
Type: Configuration
Product: squid3
Operating System: debian
{ "fixed": "3.5.27-1"}
Source: debian
Type: Configuration
Vendor: *
Product: debian_linux
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true } ], "operator": "OR"}
Source: nvd
Type: Configuration
Vendor: *
Product: squid
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.0.23", "vulnerable": true } ], "operator": "OR"}
Source: nvd
Type: Configuration
Vendor: *
Product: ubuntu_linux
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "vulnerable": true }, { "cpe23uri": "cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*", "vulnerable": true } ], "operator": "OR"}
Source: nvd