Vulnerability Description
A vulnerability in the London Trust Media Private Internet Access (PIA) VPN Client v82 for macOS could allow an authenticated, local attacker to run arbitrary code with elevated privileges. The macOS binary openvpn_launcher.64 is setuid root. This binary creates /tmp/pia_upscript.sh when executed. Because the file creation mask (umask) is not reset, the umask value is inherited from the calling process. This value can be manipulated to cause the privileged binary to create files with world writable permissions. A local unprivileged user can modify /tmp/pia_upscript.sh during the connect process to execute arbitrary code as the root user.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Londontrustmedia | Private Internet Access Vpn Client | 82 |
| Apple | Macos | - |
Related Weaknesses (CWE)
References
- https://github.com/mirchr/security-research/blob/master/vulnerabilities/PIA/CVE-ExploitThird Party Advisory
- https://github.com/mirchr/security-research/blob/master/vulnerabilities/PIA/CVE-ExploitThird Party Advisory
FAQ
What is CVE-2019-12577?
CVE-2019-12577 is a vulnerability with a CVSS score of 7.8 (HIGH). A vulnerability in the London Trust Media Private Internet Access (PIA) VPN Client v82 for macOS could allow an authenticated, local attacker to run arbitrary code with elevated privileges. The macOS ...
How severe is CVE-2019-12577?
CVE-2019-12577 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-12577?
Check the references section above for vendor advisories and patch information. Affected products include: Londontrustmedia Private Internet Access Vpn Client, Apple Macos.