CVE-2021-23953

If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

CVSS v3.0 4.3 MEDIUM
CVSS v2.0 4.3 MEDIUM

4.3^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://www.mozilla.org/security/advisories/mfsa2021-04/	Release Notes Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-05/	Release Notes Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-03/	Release Notes Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1683940	Issue Tracking Permissions Required Vendor Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:firefox_esr::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::

Information

Published : 2021-02-25 19:15

Updated : 2021-03-03 13:05

NVD link : CVE-2021-23953

Mitre link : CVE-2021-23953

JSON object : View

CWE

NVD-CWE-noinfo

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Products Affected

mozilla

firefox
firefox_esr
thunderbird

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