CVE-2018-5163 — Improper Preservation of Permissions in Mozilla Firefox
Severity
8.1HIGHNVD
OSV9.8
EPSS
2.0%
top 16.40%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJun 11
Latest updateMay 13
Description
If a malicious attacker has used another vulnerability to gain full control over a content process, they may be able to replace the alternate data resources stored in the JavaScript Start-up Bytecode Cache (JSBC) for other JavaScript code. If the parent process then runs this replaced code, the executed script would be run with the parent process' privileges, escaping the sandbox on content processes. This vulnerability affects Firefox < 60.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 2.2 | Impact: 5.9
Affected Packages4 packages
Also affects: Ubuntu Linux 14.04, 16.04, 17.10, 18.04
🔴Vulnerability Details
4GHSA▶
GHSA-647q-gc86-99gj: If a malicious attacker has used another vulnerability to gain full control over a content process, they may be able to replace the alternate data res↗2022-05-13
OSV▶
CVE-2018-5163: If a malicious attacker has used another vulnerability to gain full control over a content process, they may be able to replace the alternate data res↗2018-05-11
📋Vendor Advisories
4💬Community
1Bugzilla
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