CVE-2024-31995 zcap has incomplete expiration checks in capability chains.
Attackers can bypass expiration checks in delegated capability chains, allowing unauthorized access outside the intended time period.
- 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-2024-31995?
CVE-2024-31995 is a medium-severity vulnerability in digitalbazaar zcap, published on 10 Apr 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
`@digitalbazaar/zcap` provides JavaScript reference implementation for Authorization Capabilities. Prior to version 9.0.1, when invoking a capability with a chain depth of 2, i.e., it is delegated directly from the root capability, the `expires` property is not properly checked against the current date or other `date` param. This can allow invocations outside of the original intended time period. A zcap still cannot be invoked without being able to use the associated private key material. `@digitalbazaar/zcap` v9.0.1 fixes expiration checking. As a workaround, one may revoke a zcap at any time.
Weakness: CWE-613
Which versions are affected by CVE-2024-31995?
2 open source packages ship an affected version, including @digitalbazaar/zcap.
| Package | Affected | Fixed in |
|---|---|---|
@digitalbazaar/zcap npm | All versions | 9.0.1 |
@digitalbazaar/zcap npm | All versions | 9.0.1 |
How do I fix CVE-2024-31995?
Upgrade @digitalbazaar/zcap to 9.0.1 or later.
Is CVE-2024-31995 being exploited?
There is no known exploitation of CVE-2024-31995 in the wild and no public exploit code.
Sources
Also known as GHSA-hp8h-7x69-4wmv.