Paper/Archive/CVE-2022-26143

CVE-2022-26143

Mitel MiCollab, MiVoice Business Express — MiCollab, MiVoice Business Express Access Control Vulnerability

KEV · due 15 Apr EPSS 87%public exploit SSVC act CVSS 9.8

CVSS 9.8 (ADP)9.8 / 10 × 3029.4 In CISA KEV+3030.0 EPSS percentile 99.8.998 × 2020.0 Exploit: SSVC active+1010.0 SSVC exploitation: active+1010.0

Description · from the CVE record

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

ProductAffectedFixed inSource

n/an/a–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

refmitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-22-0001 refakamai.com/blog/security/phone-home-ddos-attack-vector refshadowserver.org/news/cve-2022-26143-tp240phonehome-reflection-amplification-ddos-attack-vector refnews.ycombinator.com/item?id=30614073 refblog.cloudflare.com/cve-2022-26143 refteam-cymru.com/blog/2022/03/08/record-breaking-ddos-potential-discovered-cve-2022-26143 refarstechnica.com/information-technology/2022/03/ddosers-use-new-method-capable-of-amplifying-traffic-by-a-factor-of-4-billion refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26143 kevcisa.gov/known-exploited-vulnerabilities-catalog