CVE-2020-15843

ActFax Version 7.10 Build 0335 (2020-05-25) is susceptible to a privilege escalation vulnerability due to insecure folder permissions on %PROGRAMFILES%\ActiveFax\Client\, %PROGRAMFILES%\ActiveFax\Install\ and %PROGRAMFILES%\ActiveFax\Terminal\. The folder permissions allow "Full Control" to "Everyone". An authenticated local attacker can exploit this to replace the TSClientB.exe binary in the Terminal directory, which is executed on logon for every user. Alternatively, the attacker can replace any of the binaries in the Client or Install directories. The latter requires additional user interaction, for example starting the client.

CVSS v3 7.3 HIGH
CVSS v2.0 4.4 MEDIUM

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.3 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

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://blog.to.com/advisory-actfax-7-10-build-0335-privilege-escalation-cve-2020-15843/	Exploit Third Party Advisory
https://blog.to.com/advisory-actfax-7-10-build-0335-privilege-escalation-cve-2020-15843/	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:actfax:actfax:7.10:build_0335:*:*:*:*:*:*

History

21 Nov 2024, 05:06

Type	Values Removed	Values Added
References	~~() https://blog.to.com/advisory-actfax-7-10-build-0335-privilege-escalation-cve-2020-15843/ - Exploit, Third Party Advisory~~	() https://blog.to.com/advisory-actfax-7-10-build-0335-privilege-escalation-cve-2020-15843/ - Exploit, Third Party Advisory

Information

Published : 2020-09-24 23:15

Updated : 2024-11-21 05:06

NVD link : CVE-2020-15843

Mitre link : CVE-2020-15843

CVE.ORG link : CVE-2020-15843

JSON object : View

Products Affected

actfax

actfax

CWE

CWE-276

Incorrect Default Permissions

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