Vulnerability in Apple macOS
CVE-2020-11582
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.)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (57.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
References
- git.lsd.cat/g/pulse-host-checker-rce (Exploit, Third Party Advisory)
- kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44426 (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-11582?
- CVE-2020-11582 is a high-severity vulnerability in Apple macOS, classified under Exposure of Resource to Wrong Sphere. CVSS score: 8.8/10. Published 2020-04-06.
- How severe is CVE-2020-11582?
- High severity. CVSS v3 base score is 8.8 out of 10.