CVE-2020-26970

When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable. This vulnerability affects Thunderbird < 78.5.1.

CVSS v3.0 8.8 HIGH
CVSS v2.0 9.3 HIGH

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.3^/10

CVSS v2.0 : HIGH

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

Exploitability : 8.6 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1677338	Issue Tracking Permissions Required Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-53/	Vendor Advisory

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Configurations

Configuration 1 (hide)

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

Information

Published : 2020-12-08 17:15

Updated : 2020-12-10 10:52

NVD link : CVE-2020-26970

Mitre link : CVE-2020-26970

JSON object : View

CWE

CWE-787

Out-of-bounds Write

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Products Affected

mozilla

thunderbird

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