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Advisories

MRBS before 1.13.0 Password Reset Poisoning via Host Header Injection

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Severity
high
Date
Affecting

  • mrbs-code >= 0, < 1.13.0

CWE
  • CWE-640 Weak Password Recovery Mechanism for Forgotten Password
CVSS
8.6
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
leediay153 from Viettel Post, John Beranek
Description
MRBS before 1.13.0 contains a password reset poisoning vulnerability that allows unauthenticated attackers to redirect reset links by forging the Host header when $url_base is unset. Attackers can request a reset for a victim so AuthDb::notifyUser() emails a link pointing to their host, capturing the reset key when opened to take over accounts including administrators.

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