Advisory Details

June 2nd, 2021

Bosch B426 Web Configuration Credential Information Disclosure Vulnerability

CVE ID	CVE-2021-23846
CVSS SCORE	8.0, AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Bosch
AFFECTED PRODUCTS	B426
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of Bosch B426. User interaction is required to exploit this vulnerability. The specific flaw exists within the handling of login credentials provided to the login.cgi endpoint. The issue results from displaying sensitive information in plaintext. An attacker can leverage this vulnerability to disclose sensitive information in the context of the user.
ADDITIONAL DETAILS	Bosch has issued an update to correct this vulnerability. More details can be found at: https://psirt.bosch.com/security-advisories/bosch-sa-196933-bt.html
DISCLOSURE TIMELINE	2021-01-29 - Vulnerability reported to vendor 2021-06-02 - Coordinated public release of advisory 2021-06-03 - Advisory Updated
CREDIT	Chizuru Toyama of TXOne IoT/ICS Security Research Labs

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