CVE-2019-11539 on CISA KEV

In Pulse Secure Pulse Connect Secure version 9.0RX before 9.0R3.4, 8.3RX before 8.3R7.1, 8.2RX before 8.2R12.1, and 8.1RX before 8.1R15.1 and Pulse Policy Secure version 9.0RX before 9.0R3.2, 5.4RX before 5.4R7.1, 5.3RX before 5.3R12.1, 5.2RX before 5.2R12.1, and 5.1RX before 5.1

01What CISA says about this vulnerability

In Pulse Secure Pulse Connect Secure version 9.0RX before 9.0R3.4, 8.3RX before 8.3R7.1, 8.2RX before 8.2R12.1, and 8.1RX before 8.1R15.1 and Pulse Policy Secure version 9.0RX before 9.0R3.2, 5.4RX before 5.4R7.1, 5.3RX before 5.3R12.1, 5.2RX before 5.2R12.1, and 5.1RX before 5.1R15.1, the admin web interface allows an authenticated attacker to inject and execute commands.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• kb.pulsesecure.net — https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44101
• www.securityfocus.com — http://www.securityfocus.com/bid/108073
• psirt.global.sonicwall.com — https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0010
• i.blackhat.com — https://i.blackhat.com/USA-19/Wednesday/us-19-Tsai-Infiltrating-Corporate-Intran…
• packetstormsecurity.com — http://packetstormsecurity.com/files/154376/Pulse-Secure-8.1R15.1-8.2-8.3-9.0-SS…
• devco.re — https://devco.re/blog/2019/09/02/attacking-ssl-vpn-part-3-the-golden-Pulse-Secur…
• www.kb.cert.org — https://www.kb.cert.org/vuls/id/927237
• packetstormsecurity.com — http://packetstormsecurity.com/files/155277/Pulse-Secure-VPN-Arbitrary-Command-E…
• packetstormsecurity.com — http://packetstormsecurity.com/files/162092/Pulse-Secure-VPN-Arbitrary-Command-E…

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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