CVE-2022-26143

The TP-240 (aka tp240dvr) component in Mitel MiCollab before 9.4 SP1 FP1 and MiVoice Business Express through 8.1 allows remote attackers to obtain sensitive information and cause a denial of service (performance degradation and excessive outbound traffic). This was exploited in the wild in February and March 2022 for the TP240PhoneHome DDoS attack.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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CISA-ADPADP
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 98%
VendorProductVersion
mitelmicollab
𝑥
< 9.4
mitelmicollab
9.4
mitelmicollab
9.4:sp1
mitelmivoice_business_express
𝑥
≤ 8.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion/
https://blog.cloudflare.com/cve-2022-26143/
https://news.ycombinator.com/item?id=30614073
https://team-cymru.com/blog/2022/03/08/record-breaking-ddos-potential-discovered-cve-2022-26143/
https://www.akamai.com/blog/security/phone-home-ddos-attack-vector
https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-22-0001
https://www.shadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-ddos-attack-vector/
https://arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion/
https://blog.cloudflare.com/cve-2022-26143/
https://news.ycombinator.com/item?id=30614073
https://team-cymru.com/blog/2022/03/08/record-breaking-ddos-potential-discovered-cve-2022-26143/
https://www.akamai.com/blog/security/phone-home-ddos-attack-vector
https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-22-0001
https://www.shadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-ddos-attack-vector/