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CVE-2018-18506

Public on 2019-02-05
Modified on 2019-04-26
Description

When proxy auto-detection is enabled, if a web server serves a Proxy Auto-Configuration (PAC) file or if a PAC file is loaded locally, this PAC file can specify that requests to the localhost are to be sent through the proxy to another server. This behavior is disallowed by default when a proxy is manually configured, but when enabled could allow for attacks on services and tools that bind to the localhost for networked behavior if they are accessed through browsing. This vulnerability affects Firefox < 65.

Severity
Medium
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CVSS v3 Base Score
6.1
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core thunderbird 2019-04-25 16:37 ALAS2-2019-1195

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD CVSSv3 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD CVSSv2 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

References

Red Hat: CVE-2018-18506 Mitre: CVE-2018-18506 FAQs regarding Amazon Linux ALAS/CVE Severity