SARA / Free Tools / CVE / CVE-2019-9812

CVE-2019-9812 — Given a compromised sandboxed content process due to a separate vulnerability, i

Given a compromised sandboxed content process due to a separate vulnerability, it is possible to escape that sandbox by loading accounts.firefox.com in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then syn

CVSS
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EPSS
0.52% (top 33.50%)
CWE
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Published
2020-01-08T21:41:06.000Z
Last modified
2024-08-04T22:01:54.689Z
CVSS vector
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01What is this vulnerability?

Given a compromised sandboxed content process due to a separate vulnerability, it is possible to escape that sandbox by loading accounts.firefox.com in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then synchronized to the local machine and the compromised browser would restart without the sandbox if a crash is triggered…

02Affected products

VendorProductVersions
MozillaFirefox ESRbefore 60.9
MozillaFirefox ESRbefore 68.1
MozillaFirefoxbefore 69

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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