Vulnerability Description
An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, launches a TCP server that accepts local connections on a random port. This can be reached by local HTTP clients, because up to 25 invalid lines are ignored, and because DNS rebinding can occur. (This server accepts, for example, a setcookie command that might be relevant to CVE-2020-11581 exploitation.)
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pulsesecure | Pulse Connect Secure | <= 2020-04-06 |
| Apple | Macos | - |
| Linux | Linux Kernel | - |
| Oracle | Solaris | - |
| Pulsesecure | Pulse Policy Secure | - |
Related Weaknesses (CWE)
References
- https://git.lsd.cat/g/pulse-host-checker-rceExploitThird Party Advisory
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44426Vendor Advisory
- https://git.lsd.cat/g/pulse-host-checker-rceExploitThird Party Advisory
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44426Vendor Advisory
FAQ
What is CVE-2020-11582?
CVE-2020-11582 is a vulnerability with a CVSS score of 8.8 (HIGH). An issue was discovered in Pulse Secure Pulse Connect Secure (PCS) through 2020-04-06. The applet in tncc.jar, executed on macOS, Linux, and Solaris clients when a Host Checker policy is enforced, lau...
How severe is CVE-2020-11582?
CVE-2020-11582 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-11582?
Check the references section above for vendor advisories and patch information. Affected products include: Pulsesecure Pulse Connect Secure, Apple Macos, Linux Linux Kernel, Oracle Solaris, Pulsesecure Pulse Policy Secure.