A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.0 | 2.2 | Low | CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L |
| Product | Vendor | Version |
|---|---|---|
| Red Hat Enterprise Linux 10 | Red Hat | n/a |
| Red Hat Enterprise Linux 9 | Red Hat | n/a |
| Red Hat Enterprise Linux 10 | Red Hat | n/a |
| Red Hat Enterprise Linux 6 | Red Hat | n/a |
| Red Hat Enterprise Linux 7 | Red Hat | n/a |