Known exploited vulnerability
CVE-2020-5902
The short answer
CVE-2020-5902 affects n/a BIG-IP and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first.
What it is
In BIG-IP versions 15.0.0-15.1.0.3, 14.1.0-14.1.2.5, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, the Traffic Management User Interface (TMUI), also referred to as the Configuration utility, has a Remote Code Execution (RCE) vulnerability in undisclosed pages.
Weakness: CWE-22.
Severity
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Nov 3, 2021
Federal due date May 3, 2022
EPSS, next 30 days
100%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
BIG-IP. NVD's record lists the exact affected versions.
References
- badpackets.net/over-3000-f5-big-ip-endpoints-vulnerable-to-cve-2020-5902/ ExploitThird Party Advisory
- github.com/Critical-Start/Team-Ares/tree/master/CVE-2020-5902 Broken LinkExploitThird Party Advisory
- support.f5.com/csp/article/K52145254 Vendor Advisory
- swarm.ptsecurity.com/rce-in-f5-big-ip/ ExploitThird Party Advisory
- www.criticalstart.com/f5-big-ip-remote-code-execution-exploit/ ExploitThird Party Advisory
- www.kb.cert.org/vuls/id/290915 Third Party AdvisoryUS Government Resource
- badpackets.net/over-3000-f5-big-ip-endpoints-vulnerable-to-cve-2020-5902/ ExploitThird Party Advisory
- github.com/Critical-Start/Team-Ares/tree/master/CVE-2020-5902 Broken LinkExploitThird Party Advisory
- support.f5.com/csp/article/K52145254 Vendor Advisory
- swarm.ptsecurity.com/rce-in-f5-big-ip/ ExploitThird Party Advisory
- www.criticalstart.com/f5-big-ip-remote-code-execution-exploit/ ExploitThird Party Advisory
- www.kb.cert.org/vuls/id/290915 Third Party AdvisoryUS Government Resource
Questions
Is CVE-2020-5902 being exploited?
Yes. CISA added CVE-2020-5902 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03. CISA lists it as used in ransomware campaigns.
How do I fix CVE-2020-5902?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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