CVE-2020-37094
EspoCRM 5.7.0 prior to 5.9.0 contains an authentication token reuse vulnerability that allows authenticated attackers to bypass two-factor authentication by exploiting token-to-password-hash mapping in application/Espo/Core/Utils/Authentication/Espo.php.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
EspoCRM 5.7.0 prior to 5.9.0 contains an authentication token reuse vulnerability that allows authenticated attackers to bypass two-factor authentication by exploiting token-to-password-hash mapping in application/Espo/Core/Utils/Authentication/Espo.php. Attackers can obtain an authentication token for a controlled account and replay it against any victim account sharing the same password, since tokens are bound to password hashes rather than unique per-user values, bypassing the victim's 2FA protections.
- CVSS 4.0
- 8.6 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.47% probability · 39th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-303
- Affected
- espocrm/espocrm
- Source
- disclosure@vulncheck.com
References
- https://github.com/espocrm/espocrm/commit/b299220dd0c7acdaa1ed8be8ffd79c7985093c7a
- https://www.espocrm.comProduct
- https://www.exploit-db.com/exploits/48376Exploit, VDB Entry
- https://www.vulncheck.com/advisories/espocrm-two-factor-auth-bypass-via-auth-token-reuse-between-accounts-with-identical-passwords
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.