Vulnerability · Published Apr 6, 2020 · Assigned by mitre

CVE-2020-11582

High 8.8

In plain English

A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).

Severity (CVSS NVD)8.8High

Exploit odds (30 days)0.9%top 40.8% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.)

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://git.lsd.cat/g/pulse-host-checker-rce x_refsource_MISC
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44426 x_refsource_CONFIRM