High severity · published Sep 11, 2023
CVE-2023-4583
When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not…
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 117.0 · source: NVD
FE
Firefox Esr · Mozilla
before 115.2 · source: NVD
TH
Thunderbird · Mozilla
before 115.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4583
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-4583
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1842030
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-34/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-36/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-38/
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