CVE-2020-13162
A time-of-check time-of-use vulnerability in PulseSecureService.exe in Pulse Secure Client versions prior to 9.1.6 down to 5.3 R70 for Windows (which runs as NT AUTHORITY/SYSTEM) allows unprivileged users to run a Microsoft Installer executable with…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A time-of-check time-of-use vulnerability in PulseSecureService.exe in Pulse Secure Client versions prior to 9.1.6 down to 5.3 R70 for Windows (which runs as NT AUTHORITY/SYSTEM) allows unprivileged users to run a Microsoft Installer executable with elevated privileges.
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.79% probability · 54th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-367
- Affected
- pulsesecure/pulse secure desktop client · pulsesecure/pulse secure installer service
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/158117/Pulse-Secure-Client-For-Windows-Local-Privilege-Escalation.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/159065/Pulse-Secure-Windows-Client-Privilege-Escalation.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Jun/25Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Sep/15Mailing List, Third Party Advisory
- https://kb.pulsesecure.net/?atype=saVendor Advisory
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44503Vendor Advisory
- https://twitter.com/gsepcali/status/1262551597990711296Third Party Advisory
- https://twitter.com/gsepcali/status/1272927080909623297Third Party Advisory
- https://twitter.com/sepcali/status/1262551597990711296Third Party Advisory
- https://www.redtimmy.com/privilege-escalation/pulse-secure-client-for-windows-9-1-6-toctou-privilege-escalation-cve-2020-13162/Exploit, Third Party Advisory
- http://packetstormsecurity.com/files/158117/Pulse-Secure-Client-For-Windows-Local-Privilege-Escalation.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/159065/Pulse-Secure-Windows-Client-Privilege-Escalation.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Jun/25Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2020/Sep/15Mailing List, Third Party Advisory
- https://kb.pulsesecure.net/?atype=saVendor Advisory
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44503Vendor Advisory
- https://twitter.com/gsepcali/status/1262551597990711296Third Party Advisory
- https://twitter.com/gsepcali/status/1272927080909623297Third Party Advisory
- https://twitter.com/sepcali/status/1262551597990711296Third Party Advisory
- https://www.redtimmy.com/privilege-escalation/pulse-secure-client-for-windows-9-1-6-toctou-privilege-escalation-cve-2020-13162/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.