Vulnerability identifier: #VU27038

Vulnerability risk: Medium

CVSSv3.1: 5.8 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11542

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ivanti Connect Secure (formerly Pulse Connect Secure)
Server applications / Remote access servers, VPN
Ivanti Policy Secure (formerly Pulse Policy Secure)
Server applications / Remote access servers, VPN

Vendor: Ivanti

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Pulse Connect Secure and Pulse Policy Secure. A remote authenticated authenticated user (via the admin web interface)  can send specially crafted message, trigger a stack-based buffer overflow and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Ivanti Connect Secure (formerly Pulse Connect Secure): 8.1R1.0 - 9.0R3.2

Ivanti Policy Secure (formerly Pulse Policy Secure): 5.1R1.0 - 9.0R3.1

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External links
http://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44101
http://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44101/
http://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0010

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.