CVE-2018-19131

Impact:
Moderate
Public Date:
2018-10-31
CWE:
CWE-79
Bugzilla:
1645146: CVE-2018-19131 squid: Cross-Site Scripting when generating HTTPS response messages about TLS errors
A Cross-Site Scripting vulnerability has been discovered in squid in the way X.509 certificates fields are displayed in some error pages. An attacker who can control the certificate of the origin content server may use this flaw to inject scripting code in the squid generated page, which is executed on the client's browser.

Find out more about CVE-2018-19131 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

Red Hat Enterprise Linux 6:
This vulnerability has been rated as having a security impact of Moderate. After evaluation and in accordance with the criteria noted in the product support life cycle, there are no plans to address this issue in an upcoming release. Please contact Red Hat Support for further information.

Red Hat Enterprise Linux 7:
This vulnerability is currently targeted to be addressed in an upcoming release.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 5.6
CVSS3 Base Metrics CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N
Attack Vector Adjacent Network
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality None
Integrity Impact High
Availability Impact None

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 8 squid Not affected
Red Hat Enterprise Linux 7 squid Affected
Red Hat Enterprise Linux 6 squid34 Will not fix
Red Hat Enterprise Linux 6 squid Will not fix
Red Hat Enterprise Linux 5 squid Not affected
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Mitigation

Remove %D error page macro from ERR_SECURE_CONNECT_FAIL pages found under /usr/share/squid/errors/ and any custom error pages.

External References

Last Modified