Experts developed exploits for CVE-2022-1388 RCE in F5 BIG
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2022-1388 | Unauthenticated RCE in F5 BIG-IP via Missing Authentication F5 BIG-IP contains a critical missing-authentication flaw (CWE-306) in its iControl REST control plane: an unauthenticated attacker with network reachability to the management interface, or to self IPs exposing the REST service on TCP 443, can bypass authentication completely. By sending specially crafted HTTP requests, the attacker gains the ability to execute arbitrary code, create or delete files, and disable services, effectively achieving full takeover of the load balancer or security appliance and the traffic it handles. All F5 BIG-IP deployments running unpatched software are affected; the provided data does not enumerate exact version ranges, which are listed in F5's May 2022 security advisory. The flaw was added to CISA's KEV catalog on 2022-05-10 with known ransomware use, and EPSS assigns a 100% probability of exploitation within 30 days (100th percentile), indicating active in-the-wild exploitation. No public proof-of-concept is catalogued in the provided data, but the KEV listing and known ransomware use confirm real-world attacks. Do: Upgrade affected F5 BIG-IP systems to the fixed releases listed in F5's May 2022 security advisory (K23605340) immediately, prioritizing appliances whose management interface or self IPs on TCP 443 are reachable from untrusted networks; as an interim mitigation, block untrusted access to the management interface and the iControl REST service. Because this flaw is in CISA's KEV catalog with known ransomware use, also hunt for signs of compromise (unexpected files, disabled services, unknown persistence) on any system that was exposed before patching. | 9.8 | 100% | KEV ransomware PoC ×4 |
| large~10,000 internet-exposed BIG-IP systems (public scans at disclosure counted 8k-10k+), with a far larger installed base behind firewalls |
Full article459 words · extracted from securityaffairs.com · click to collapse
A few days after F5 addressed the critical CVE-2022-1388 Remote Code execution flaw in its BIG-IP products, researchers created exploits for it.
Last week security and application delivery solutions provider F5 released its security notification to inform customers that it has released security updates from tens of vulnerabilities in its products.
The company addressed a total of 43 vulnerabilities, the most severe one is a critical issue tracked as CVE-2022-1388 (CVSS score of 9.8). An unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses can exploit the CVE-2022-1388 flaw to execute arbitrary system commands, create or delete files, or disable services.
“This vulnerability may allow an unauthenticated attacker with network access to the BIG-IP system through the management port and/or self IP addresses to execute arbitrary system commands, create or delete files, or disable services. There is no data plane exposure; this is a control plane issue only.” reads the advisory published by the vendor.”
The flaw affects the following versions:
16.1.0 – 16.1.2
15.1.0 – 15.1.5
14.1.0 – 14.1.4
13.1.0 – 13.1.4
12.1.0 – 12.1.6
11.6.1 – 11.6.5
and the vendor addressed it with the release of:
17.0.0
16.1.2.2
15.1.5.1
14.1.4.6
13.1.5
The company provided the following temporary mitigations for customers that cannot install the patched versions:
- Block iControl REST access through the self IP address
- Block iControl REST access through the management interface
- Modify the BIG-IP httpd configuration
Now researchers at Positive Technologies announced to have developed an exploit code for CVE-2022-1388 in F5’s BIG-IP and urge admins to address it asap to protect their systems.
— PT SWARM (@ptswarm) May 7, 2022🔥 We have reproduced the fresh CVE-2022-1388 in F5's BIG-IP.
Successful exploitation could lead to RCE from an unauthenticated user.
Patch ASAP! pic.twitter.com/WjlWtTgSVz
Researchers from Horizon3 Attack Team also confirmed that the CVE-2022-1388 is trivial to exploit, the experts also plan to release a POC exploit code this week.
The new F5 RCE vulnerability, CVE-2022-1388, is trivial to exploit. We spent some time chasing unrelated diffs within the newest version, but @jameshorseman2 ultimately got first blood. We'll release a POC next week to give more time for orgs to patch.#f5 #CyberSecurity pic.twitter.com/O1SivUE4vA
— Horizon3 Attack Team (@Horizon3Attack) May 6, 2022
Researchers are warning of threat actors already attempting to exploit this vulnerability:
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