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Advisories

Nanobot < 0.2.1 SSRF via Microsoft Teams Channel serviceUrl Poisoning

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severity
high
date
Affecting

  • Nanobot < 0.2.1

CWE
  • CWE-918 Server-Side Request Forgery (SSRF)
CVSS
7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N
Credit
Chia Min Jun Lennon
Description
Nanobot prior to version 0.2.1 contains a server-side request forgery vulnerability in the Microsoft Teams channel handler that allows remote attackers to exfiltrate Bot Framework bearer tokens by supplying a forged activity with an attacker-controlled serviceUrl value. Attackers can poison the stored conversation reference by sending a crafted inbound activity to the Teams webhook, causing subsequent bot replies to transmit token-bearing Authorization header requests to an attacker-controlled host.

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