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Exploited vulnerability · CISA KEV

Is CVE-2020-8218 exploited? Yes: in CISA KEV since 7 Mar 2022

Gociux · Pulse Secure Pulse Connect Secure · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2020-8218, Pulse Connect Secure Code Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 7 Mar 2022, 585 days after it was published. It affects Pulse Secure Pulse Connect Secure, an internet-facing product of the kind attackers use for initial access. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 7 Mar 2022
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity7.2CVSS 3.1 · high
US federal due7 Sep 2022BOD 22-01 deadline

What it is

A code injection vulnerability exists in Pulse Connect Secure that allows an attacker to crafted a URI to perform an arbitrary code execution via the admin web interface.

VendorPulse Secure (1 exploited CVE in KEV)
ProductPulse Connect Secure
VulnerabilityPulse Connect Secure Code Injection Vulnerability
WeaknessCWE-94
Published30 Jul 2020
Added to KEV7 Mar 2022
Reported by (CNA)hackerone

What to do

  1. Check whether you run it. Look for Pulse Connect Secure in your asset inventory, including appliances and cloud images. Stack check lists every exploited Pulse Secure CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 30 Jul 2020.
  4. Get told next time. Email alerts when CISA adds a CVE for Pulse Secure.

References

Questions

Is CVE-2020-8218 being exploited?

Yes. CISA added CVE-2020-8218 to the Known Exploited Vulnerabilities catalog on 7 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2020-8218 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2020-8218?

Apply updates per vendor instructions. Check Pulse Secure's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Pulse Connect Secure and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in March 2022 · act-now radar.

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