Upstream information
Description
The key_certify function in usr.bin/ssh/key.c in OpenSSH 5.6 and 5.7, when generating legacy certificates using the -t command-line option in ssh-keygen, does not initialize the nonce field, which might allow remote attackers to obtain sensitive stack memory contents or make it easier to conduct hash collision attacks.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having important severity.
| CVSS detail | National Vulnerability Database |
|---|---|
| Base Score | 5 |
| Vector | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| Access Vector | Network |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | None |
| Availability Impact | None |
| CVSS detail | CNA (CISA-ADP) |
|---|---|
| Base Score | 7.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | High |
| Integrity Impact | None |
| Availability Impact | None |
| CVSSv3 Version | 3.1 |
Note from the SUSE Security Team
This issue only affects openssh 5.6 and 5.7. Only openSUSE 11.4 shipped this version and has received fixes. Older produxcts or openssh versions are not affected. SUSE Bugzilla entry: 669477 [VERIFIED / FIXED] No SUSE Security Announcements cross referenced.SUSE Timeline for this CVE
CVE page created: Fri Jun 28 04:24:21 2013CVE page last modified: Sun Jun 7 19:15:06 2026