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CVE

CVE-2024-1563

An attacker could have executed unauthorized scripts on top origin sites using a JavaScript URI when opening an external

An attacker could have executed unauthorized scripts on top origin sites using a JavaScript URI when opening an external URL with a custom Firefox scheme and a timeout race condition. This vulnerability affects Focus for iOS < 122.

HIGH · CVSS 8.1 EPSS 0.00423
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
▤

Affected Products & Versions

1
mozilla firefox focus< 122.0
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.1 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Feb 2024 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.mozilla.org/show_bug.cgi?id=1863831Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2024-09/Vendor Advisory
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