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March 25, 2023Severity Medium Analysis Summary GandCrab – a ransomware-as-a-service variant – was discovered in early 2018. At least five versions of GandCrab have been created since its […]March 25, 2023Severity Medium Analysis Summary NjRat is a Remote Access Trojan, which is found leveraging Pastebin to deliver a second-stage payload after initial infection. There are multiple […]March 24, 2023Severity Medium Analysis Summary CVE-2023-20113 Cisco SD-WAN vManage Software is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Platform
Managed Security Services
Managed Penetration Testing
Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
Resources
March 25, 2023Severity Medium Analysis Summary GandCrab – a ransomware-as-a-service variant – was discovered in early 2018. At least five versions of GandCrab have been created since its […]March 25, 2023Severity Medium Analysis Summary NjRat is a Remote Access Trojan, which is found leveraging Pastebin to deliver a second-stage payload after initial infection. There are multiple […]March 24, 2023Severity Medium Analysis Summary CVE-2023-20113 Cisco SD-WAN vManage Software is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Rewterz Threat Advisory – CVE-2021-3428 – Linux Kernel denial of service
March 19, 2021Rewterz Threat Advisory – Apache PDFBox denial of service
March 22, 2021
Severity
High
Analysis Summary
Attackers are exploiting a recently-patched, critical vulnerability in F5 devices that have not yet been updated. Previously identified as unauthenticated remote command execution flaw (CVE-2021-22986) which exists in F5BIG-IP and BIG-IQ enterprise networking infrastructure, and could allow attackers to take full control over a vulnerable system.
Researchers have said that the last 24 hours have been critically observed and they have observed multiple exploitation attempts against their honeypot infrastructure. “NCC researchers said”. For this latest rash of exploit attempts, anyone running an affected version of BIG-IP should prioritize upgrade.
CVE-2021-22986
F5 BIG-IP could allow a remote attacker to execute arbitrary commands on the system, caused by an error in the iControl REST interface. An attacker could exploit this vulnerability using the control plane to execute arbitrary system commands, create or delete files, and disable services.
Impact
- Denial of service
- Command execution
- Arbitrary code execution
Affected Vendors
F5
Affected Products
- F5 BIG-IP
- F5 BIG-IQ
Remediation
Users are advised to update to the latest version to avoid exploitation.
https://support.f5.com/csp/article/K02566623
Link to the published advisory.