A vulnerability, which was classified as critical, has been found in sslh. This issue affects the function hexdump of the file probe.c of the component Packet Dumping Handler. The manipulation of the argument msg_info leads to format string. The attack may be initiated remotely. The name of the patch is b19f8a6046b080e4c2e28354a58556bb26040c6f. It is recommended to apply a patch to fix this issue. The identifier VDB-216497 was assigned to this vulnerability.
The product uses a function that accepts a format string as an argument, but the format string originates from an external source.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Sslh | Sslh_project | 2.0-rc1 (including) | 2.0-rc1 (including) |
| Sslh | Ubuntu | bionic | * |
| Sslh | Ubuntu | kinetic | * |
| Sslh | Ubuntu | lunar | * |
| Sslh | Ubuntu | mantic | * |
| Sslh | Ubuntu | trusty | * |
| Sslh | Ubuntu | xenial | * |
When an attacker can modify an externally-controlled format string, this can lead to buffer overflows, denial of service, or data representation problems. It should be noted that in some circumstances, such as internationalization, the set of format strings is externally controlled by design. If the source of these format strings is trusted (e.g. only contained in library files that are only modifiable by the system administrator), then the external control might not itself pose a vulnerability.