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Improper Authentication


Severity Medium
Score 5.5/10


Bot Framework SDK 4.7.0 through 4.7.2, 4.8.0, 4.9.0 through 4.9.3, and 4.10.0 through 4.10.2 are vulnerable to Information Disclosure when a maliciously crafted claim is incorrectly authenticated by the bot. It impacts bots that are not configured to be used as a Skill and requires an attacker to have internal knowledge of the bot.

  • LOW
  • NONE
  • NONE
  • LOW
  • HIGH
  • NONE

CWE-287 - Improper Authentication

Improper (or broken) authentication attacks are widespread, and have accounted for many of the worst data breaches in recent years. Improper authentication attacks are a class of vulnerabilities where an attacker impersonates a legitimate user by exploiting weaknesses in either session management or credential management to gain access to the user’s account. This can result in disclosure of sensitive information, and can lead to system compromise, theft, identity theft, and fraud.

Advisory Timeline

  • Published