PLANKA 2.2.0 through 2.2.1 fails to limit incorrect TOTP codes submitted to POST /api/access-tokens/verify-totp, allowing attackers to brute force two-factor authentication codes. Attackers who know a user's password can reuse the ten-minute pending token to guess six-digit codes until one succeeds, obtaining a full access token.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Planka Planka
cpe:2.3:a:planka:planka:*:*:*:*:*:*:*:*
|
2.2.0
|
<= 2.2.1
|
References 4
https://github.com/plankanban/planka
disclosure@vulncheck.com
https://github.com/plankanban/planka/blob/v2.2.1/server/api/controllers/access-…
disclosure@vulncheck.com
https://github.com/plankanban/planka/commit/de4d7688317829e2a0b665fe9dbf39eaf12…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/planka-2.2.0-through-2.2.1-totp-brute-forc…
disclosure@vulncheck.com