CVE-2023-25734 : After downloading a Windows <code>.url</code> shortcut from the local filesystem, an attacker could supply a remote path

After downloading a Windows <code>.url</code> shortcut from the local filesystem, an attacker could supply a remote path that would lead to unexpected network requests from the operating system. This also had the potential to leak NTLM credentials to the resource.<br>*This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

Published 2023-06-02 17:15:11

Updated 2023-06-08 15:57:03

Source Mozilla Corporation

View at NVD, CVE.org

Products affected by CVE-2023-25734

Mozilla » Firefox
Versions before (<) 110.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Matching versions
When used together with: Microsoft » Windows » Version: N/A
Mozilla » Thunderbird
Versions before (<) 102.8
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Matching versions
When used together with: Microsoft » Windows » Version: N/A
Mozilla » Firefox Esr
Versions before (<) 102.8
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Matching versions
When used together with: Microsoft » Windows » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2023-25734

EPSS FAQ

0.27%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 68 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-25734

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
8.1	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N	2.8	5.2	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: High Availability: None

References for CVE-2023-25734

https://bugzilla.mozilla.org/show_bug.cgi?id=1809923

Access Denied
Issue Tracking;Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-07/

Security Vulnerabilities fixed in Thunderbird 102.8 — Mozilla
Vendor Advisory

CVEs referencing this url
https://bugzilla.mozilla.org/show_bug.cgi?id=1784451

1784451 - URL files on windows should be flagged as potentially malicious
Exploit;Issue Tracking;Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1812338

Access Denied
Issue Tracking;Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1810143

Access Denied
Issue Tracking;Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-06/

Security Vulnerabilities fixed in Firefox ESR 102.8 — Mozilla
Vendor Advisory

CVEs referencing this url
https://www.mozilla.org/security/advisories/mfsa2023-05/

Security Vulnerabilities fixed in Firefox 110 — Mozilla
Vendor Advisory

CVEs referencing this url

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Vulnerability Details : CVE-2023-25734

Products affected by CVE-2023-25734

Exploit prediction scoring system (EPSS) score for CVE-2023-25734

CVSS scores for CVE-2023-25734

References for CVE-2023-25734