CVE-2018-5163
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 2.0% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 2.0% in the next 30 days (EPSS).
- Severity: 8.1 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 2.0% · EPSS, next 30 days
- Weakness
- CWE-281
- Record status
- Modified
Affected
- Canonical Ubuntu Linux 14.04
- Canonical Ubuntu Linux 16.04
- Canonical Ubuntu Linux 17.10
- Canonical Ubuntu Linux 18.04
- Mozilla Firefox < 60.0
Attack profile CVSS 3.0 · 8.1
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2018-5163.md and follow it. Check whether this project is affected by CVE-2018-5163. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://bugzilla.mozilla.org/show_bug.cgi?id=1426353
- https://www.mozilla.org/security/advisories/mfsa2018-11/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1426353
- https://www.mozilla.org/security/advisories/mfsa2018-11/
References
- http://www.securityfocus.com/bid/104139
- http://www.securitytracker.com/id/1040896
- https://bugzilla.mozilla.org/show_bug.cgi?id=1426353
- https://usn.ubuntu.com/3645-1/
- https://www.mozilla.org/security/advisories/mfsa2018-11/
- http://www.securityfocus.com/bid/104139
- http://www.securitytracker.com/id/1040896
- https://bugzilla.mozilla.org/show_bug.cgi?id=1426353
- https://usn.ubuntu.com/3645-1/
- https://www.mozilla.org/security/advisories/mfsa2018-11/