CVE-2021-29949

When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially attempt to open it using a filename that isn't distributed by Thunderbird. If a computer has already been infected with a malicious library of the alternative filename, and the malicious library has been copied to a directory that is contained in the search path for executable libraries, then Thunderbird will load the incorrect library. This vulnerability affects Thunderbird < 78.9.1.

CVSS v3.0 7.8 HIGH
CVSS v2.0 4.4 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.4^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.4 / Impact : 6.4

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.mozilla.org/security/advisories/mfsa2021-13/	Release Notes Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1682101	Permissions Required Vendor Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Information

Published : 2021-06-24 07:15

Updated : 2021-06-30 10:59

NVD link : CVE-2021-29949

Mitre link : CVE-2021-29949

JSON object : View

CWE

CWE-427

Uncontrolled Search Path Element

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Products Affected

mozilla

thunderbird

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