Critical severity · published Mar 9, 2022
CVE-2022-26143
MiCollab, MiVoice Business Express Access Control Vulnerability
In wildKEV
9.8
CVSS
87.3%
EPSS
Yes
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)87.3% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Mar 25, 2022
Federal remediation dueApr 15, 2022
Ransomware campaign useNot known
Affected products
Which versions
MI
Micollab · Mitel
before 9.4; 9.4; 9.4 · source: NVD
MB
Mivoice Business Express · Mitel
through 8.1 · source: NVD
MM
MiCollab, MiVoice Business Express · Mitel
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-26143
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-26143
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
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/
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