Actively exploited · Published Mar 9, 2022 · Assigned by mitre
CVE-2022-26143
Critical 9.8 Exploited
In plain English
A critical-severity missing authentication in MiCollab, MiVoice Business Express from Mitel. Attackers are actively exploiting it in the wild (listed by CISA on March 25, 2022). The chance it is exploited in the next 30 days is estimated at 87.3% (higher than 99.8% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Apply updates per vendor instructions.
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Apr 15, 2022.
Official description
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.
Affected products (as reported)
Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-22-0001 x_refsource_MISC
- https://www.akamai.com/blog/security/phone-home-ddos-attack-vector x_refsource_MISC
- https://www.shadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-ddos-attack-vector/ x_refsource_MISC
- https://news.ycombinator.com/item?id=30614073 x_refsource_MISC
- https://blog.cloudflare.com/cve-2022-26143/ x_refsource_MISC
- https://team-cymru.com/blog/2022/03/08/record-breaking-ddos-potential-discovered-cve-2022-26143/ x_refsource_MISC
- https://arstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion/ x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26143 government-resource