Vulnerability Description
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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Actfax | Actfax | 7.10 |
Related Weaknesses (CWE)
References
- https://blog.to.com/advisory-actfax-7-10-build-0335-privilege-escalation-cve-202ExploitThird Party Advisory
- https://blog.to.com/advisory-actfax-7-10-build-0335-privilege-escalation-cve-202ExploitThird Party Advisory
FAQ
What is CVE-2020-15843?
CVE-2020-15843 is a vulnerability with a CVSS score of 7.3 (HIGH). 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\Inst...
How severe is CVE-2020-15843?
CVE-2020-15843 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-15843?
Check the references section above for vendor advisories and patch information. Affected products include: Actfax Actfax.