发布时间: 2023年5月26日
修改时间: 2024年10月31日
A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.
| NVD | openEuler | |
|---|---|---|
| Confidentiality | Low | Low |
| Attack Vector | Network | Network |
| CVSS评分 | 6.5 | 6.5 |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| Scope | Unchanged | Unchanged |
| Integrity | Low | Low |
| User Interaction | None | None |
| Availability | None | None |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2023-1371 | libssh security update | 2023年5月26日 |
| KylinSec-SA-2023-1442 | libssh security update | 2023年6月3日 |
| KylinSec-SA-2023-1455 | libssh security update | 2023年6月3日 |
| KylinSec-SA-2023-2170 | libssh security update | 2023年6月3日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | libssh | Fixed |
| KY3.4-5A | libssh | Fixed |
| KY3.5.1 | libssh | Fixed |
| KY3.5.2 | libssh | Fixed |
