An issue was discovered in H2 1.4.197. Insecure handling of permissions in the backup function allows attackers to read sensitive files (outside of their permissions) via a symlink to a fake database file.
Weakness
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| H2 | H2database | 1.4.197 (including) | 1.4.197 (including) |
| Red Hat Data Grid 7.3.3 | RedHat | h2 | * |
| H2database | Ubuntu | bionic | * |
| H2database | Ubuntu | cosmic | * |
| H2database | Ubuntu | disco | * |
| H2database | Ubuntu | eoan | * |
| H2database | Ubuntu | esm-apps/bionic | * |
| H2database | Ubuntu | esm-apps/focal | * |
| H2database | Ubuntu | esm-apps/xenial | * |
| H2database | Ubuntu | focal | * |
| H2database | Ubuntu | groovy | * |
| H2database | Ubuntu | hirsute | * |
| H2database | Ubuntu | impish | * |
| H2database | Ubuntu | kinetic | * |
| H2database | Ubuntu | lunar | * |
| H2database | Ubuntu | upstream | * |
| H2database | Ubuntu | xenial | * |
Potential Mitigations
- Follow the principle of least privilege when assigning access rights to entities in a software system.
- Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/132.html
- https://cwe.mitre.org/data/definitions/17.html
- https://cwe.mitre.org/data/definitions/35.html
- https://cwe.mitre.org/data/definitions/76.html
References
- https://access.redhat.com/errata/RHSA-2020:0727
- https://gist.github.com/owodelta/9714faf9a86435cef5a99d4930eaee20
- https://lists.apache.org/thread.html/582d4165de6507b0be82d5a6f9a1ce392ec43a00c9fed32bacf7fe1e%40%3Cuser.ignite.apache.org%3E
- https://security.netapp.com/advisory/ntap-20240726-0003/
- https://www.exploit-db.com/exploits/45105/
- https://access.redhat.com/errata/RHSA-2020:0727
- https://gist.github.com/owodelta/9714faf9a86435cef5a99d4930eaee20
- https://lists.apache.org/thread.html/582d4165de6507b0be82d5a6f9a1ce392ec43a00c9fed32bacf7fe1e%40%3Cuser.ignite.apache.org%3E
- https://security.netapp.com/advisory/ntap-20240726-0003/
- https://www.exploit-db.com/exploits/45105/