Medium severity · published Jun 2, 2023
CVE-2023-23602
A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored
6.5
CVSS
0.6%
EPSS
No
On KEV
Description
A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox < 109, Firefox ESR < 102.7, and Thunderbird < 102.7.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 109.0 · source: NVD
FE
Firefox Esr · Mozilla
before 102.7 · source: NVD
TH
Thunderbird · Mozilla
before 102.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-23602
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-23602
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1800890
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-01/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-02/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-03/
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