CVE-2019-18677 : An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended ch

An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to.

Published 2019-11-26 17:15:13

Updated 2020-07-11 00:15:14

Source MITRE

View at NVD, CVE.org

Vulnerability category: Cross-site request forgery (CSRF)

Threat overview for CVE-2019-18677

Top countries where our scanners detected CVE-2019-18677

Top open port discovered on systems with this issue 3128

IPs affected by CVE-2019-18677 2,488,555

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2019-18677!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2019-18677

EPSS FAQ

0.40%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 73 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-18677

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:N	8.6	4.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: None
6.1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	2.8	2.7	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: Low Integrity: Low Availability: None

CWE ids for CVE-2019-18677

CWE-352 Cross-Site Request Forgery (CSRF)

The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-18677

Products affected by CVE-2019-18677