OpenBSD · OpenSSH
CVE-2026-123158
OpenBSD OpenSSH Unexpected Status Code or Return Value Vulnerability
这是什么
sshd in OpenSSH before 10.6p2 on Linux, when musl libc is used without PAM, lacks a workaround for a password authentication bypass (related to misinterpretation of whether a string is intended to be a password hash). For some configurations of accounts, any password between 256 and 1024 characters succeeds. An example of a platform using musl libc without PAM is Alpine Linux.
CISA: OpenBSD OpenSSH on Linux contains an unexpected status code or return value vulnerability that could allow for authentication bypass.
该怎么做
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
美国联邦机构的修复期限：2026年11月12日
- 加入 CISA 列表
- 2026年11月9日
- 发布日期
- 2026年11月5日
- 严重程度
- 高 8.1 CVSS 3.1
- 未来 30 天遭受攻击的概率（EPSS）
- 19% 位列所有已知漏洞的前 2.7%
- 弱点类型
- CWE-394
- 更多详情
- NVD · CVE.org · CISA
全部参考链接（8）
- https://www.openssh.org/releasenotes.html#10.6p2
- https://github.com/openssh/openssh-portable/commit/4353fdc43ef646c43a8dda7025cc1a898caf1482
- https://news.ycombinator.com/item?id=50377976
- https://news.ycombinator.com/item?id=50378228
- https://marc.info/?l=openssh-unix-dev&m=179388064263131&w=2
- https://hachyderm.io/@damienmiller/117563026759098135
- https://github.com/predkambrij/sshhole-repro
- https://github.com/leonjza/sshhole-lab
OpenBSD 的其他被利用漏洞
| 加入日期 | 漏洞 | 产品 | 严重程度 | 受攻击概率 |
|---|---|---|---|---|
| 2022年3月25日 | Remote Code Execution | OpenSMTPD | 严重 9.8 | 99% |
来源：Known Exploited Vulnerabilities（CISA，公有领域）、CVE records（cve.org）和 EPSS（FIRST）。受攻击概率是 EPSS 对未来 30 天内有人尝试利用该漏洞的估计。