Researchers are reporting mass scanning for – and in-the-wild exploitation of – a critical-severity flaw in the F5 Big-IP and Major-IQ organization networking infrastructure.
Attackers are exploiting a not too long ago-patched, critical vulnerability in F5 units that have not still been updated.
The unauthenticated remote command execution flaw (CVE-2021-22986) exists in the F5 Major-IP and Significant-IQ company networking infrastructure, and could allow for attackers to take total command more than a susceptible program.
Earlier in March, F5 issued a patch for the flaw, which has a CVSS score of 9.8 and exists in the iControl Relaxation interface. After the patch was issued, various researchers posted evidence-of-thought (PoC) exploit code after reverse engineering the Java application patch in Major-IP.
Rapidly forward to this 7 days, researchers reported mass scanning for – and in-the-wild exploitation of – the flaw.
“Starting this week and in particular in the last 24 hours (March 18th, 2021) we have noticed a number of exploitation attempts in opposition to our honeypot infrastructure,” explained scientists with the NCC Team on Thursday. “This information, mixed with possessing reproduced the comprehensive exploit-chain we assess that a public exploit is likely to be obtainable in the community domain soon.”
CISA, Researchers Urge Updating
The U.S. Cybersecurity and Infrastructure Company (CISA) has urged companies applying Significant-IP and Significant-IQ to take care of the critical F5 flaw, along with a different bug staying tracked as CVE-2021-22987. This flaw, with a CVSS score of 9.9, affects the infrastructure’s Site visitors Management User Interface (TMUI), also referred to as the Configuration utility. When operating in Equipment manner, the TMUI has an authenticated RCE vulnerability in undisclosed pages.
Opportunistic mass scanning exercise detected from the pursuing hosts examining for F5 iControl Rest endpoints vulnerable to distant command execution (CVE-2021-22986).
22.214.171.124 (🇨🇳)126.96.36.199 (🇭🇰)188.8.131.52 (🇨🇳)
Vendor advisory: https://t.co/MsZmXEtcTn #threatintel
— Undesirable Packets (@poor_packets) March 19, 2021
The scenario is especially urgent as F5 offers company networking to some of the largest tech companies in the earth, such as Fb, Microsoft and Oracle, as properly as to a trove of Fortune 500 companies, which includes some of the world’s biggest economical establishments and ISPs.
“The F5 Major-IP is a pretty juicy target because of to the fact that it can handle very delicate info,” mentioned Craig Young, principal security researcher at Tripwire in an email. “An attacker with whole command more than a load balancing appliance can also get control around the web apps served via it.”
It’s not crystal clear who is powering the exploitations Threatpost has attained out to NCC Team for more remark.
Other Energetic Exploits of F5 Flaws
Security gurus in July urged firms to deploy an urgent patch for a critical vulnerability in F5 Networks’ networking units, which was becoming actively exploited by attackers to scrape qualifications, launch malware and far more. The critical distant code-execution flaw (CVE-2020-5902) had a CVSS rating of 10 out of 10.
And in September, the U.S. governing administration warned that Chinese risk actors efficiently compromised several govt and non-public sector entities by exploiting vulnerabilities in F5 Big-IP gadgets (as effectively as Citrix and Pulse Safe VPNs and Microsoft Exchange servers).
For this most up-to-date rash of exploit makes an attempt, everyone working an affected model of Massive-IP need to prioritize improve, said Young.
“Any firm functioning Massive-IP or other network equipment with the management accessibility exposed to the Internet really should be re-analyzing their network format and bringing these assets on to non-public networks,” he explained.
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