Security researchers, network operators and security vendors have detected a new reflection/amplification distributed denial-of-service (DDoS) vulnerability actively being exploited to launch multiple high-impact DDoS attacks. TP240PhoneHome (CVE-2022-26143) has a record-breaking potential amplification ratio of 4,294,967,296:1 and can be targeted to abuse collaboration systems produced by Mitel with the potential to cause significant collateral impact to businesses.
Attacks have been observed on broadband access ISPs, financial institutions, logistics companies, gaming companies, and organizations in other vertical markets. Mitel has released patched software that disables the abusable test facility whilst attacks can be mitigated using standard DDoS-defense techniques. The findings come from a collaborative research and mitigation task force effort with contributors including NETSCOUT, Akamai, Cloudflare and Mitel.
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