DEBIAN-CVE-2018-18506

Advisory lineage Upstream: 1 Downstream: 4
Upstream
CVE-2018-18506
Published: 05 Feb 2019, 21:29
Last modified:28 Apr 2026, 20:19

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
5.9 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

05 Feb 2019, 21:29
Published
Vulnerability first disclosed
28 Apr 2026, 20:19
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Systems

  • debian•firefox-esr

    < 60.6.0esr-1 | < 60.6.0esr-1 | < 60.6.0esr-1 | < 60.6.0esr-1

  • debian•thunderbird

    < 1:60.6.1-1 | < 1:60.6.1-1 | < 1:60.6.1-1 | < 1:60.6.1-1

References (1)