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Advisories

OpenMage magento-lts before 20.18.2 Account Takeover via Predictable Confirmation Key

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Severity
critical
Date
Affecting

  • magento-lts >= 0, < 20.18.2

  • magento-lts >= 21.0.0-beta1, < 21.0.0-beta3

CWE
  • CWE-330 Use of Insufficiently Random Values
CVSS
9.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
alimony, Abhi-Hackz, hariprasanth9317-tech, philipsorensen, colinmollenhour
Description
OpenMage magento-lts before 20.18.2 and 21.0.0-beta pre-releases before 21.0.0-beta3 generate customer email-confirmation keys with md5(uniqid()) and customer and administrator password-reset tokens with the non-cryptographic uniqHash(). Unauthenticated attackers can brute-force the roughly 20-bit confirmation key via the unrate-limited confirmAction endpoint to log in as pending customers, or predict administrator reset tokens after recovering generator state.

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