The function that calls the diff tool in Diffy 3.4.1 does not properly handle double quotes in a filename when run in a windows environment. This allows attackers to execute arbitrary commands via a crafted string.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Diffy | Diffy_project | 3.4.1 (including) | 3.4.1 (including) |
| Ruby-diffy | Ubuntu | bionic | * |
| Ruby-diffy | Ubuntu | focal | * |
| Ruby-diffy | Ubuntu | impish | * |
| Ruby-diffy | Ubuntu | kinetic | * |
| Ruby-diffy | Ubuntu | lunar | * |
| Ruby-diffy | Ubuntu | mantic | * |
| Ruby-diffy | Ubuntu | oracular | * |
| Ruby-diffy | Ubuntu | plucky | * |
References
- https://github.com/samg/diffy/blob/56fd935aea256742f7352b050592542d3d153bf6/CHANGELOG#L1
- https://github.com/samg/diffy/commit/478f392082b66d38f54a02b4bb9c41be32fd6593
- https://github.com/samg/diffy/blob/56fd935aea256742f7352b050592542d3d153bf6/CHANGELOG#L1
- https://github.com/samg/diffy/commit/478f392082b66d38f54a02b4bb9c41be32fd6593