CVE-2023-42446 Pow Mnesia cache doesn't invalidate all expired keys on startup
Attackers can hijack sessions if the Mnesia cache backend is used and instances are shut down longer than the session TTL.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-42446?
CVE-2023-42446 is a medium-severity authentication bypass vulnerability in pow-auth pow, published on 18 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Pow is a authentication and user management solution for Phoenix and Plug-based apps. Starting in version 1.0.14 and prior to version 1.0.34, use of `Pow.Store.Backend.MnesiaCache` is susceptible to session hijacking as expired keys are not being invalidated correctly on startup. A session may expire when all `Pow.Store.Backend.MnesiaCache` instances have been shut down for a period that is longer than a session's remaining TTL. Version 1.0.34 contains a patch for this issue. As a workaround, expired keys, including all expired sessions, can be manually invalidated.
Which versions are affected by CVE-2023-42446?
2 open source packages ship an affected version, including pow. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
pow Hex | From 1.0.14 | 1.0.34 |
pow Hex | From 1.0.14 | 1.0.34 |
Products include Powauth Pow.
How do I fix CVE-2023-42446?
Upgrade pow to 1.0.34 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-42446 being exploited?
There is no known exploitation of CVE-2023-42446 in the wild and no public exploit code.
Other vulnerabilities in pow-auth pow
Sources
Also known as GHSA-3cjh-p6pw-jhv9.