openssh 安全漏洞 (CVE-2023-48795)
CVE编号
CVE-2023-48795利用情况
暂无补丁情况
N/A披露时间
2023-12-19漏洞描述
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in [email protected] and (if CBC is used) the [email protected] MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, and libssh before 0.10.6; and there could be effects on Bitvise SSH through 9.31.解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | openssh | * | Up to (excluding) 7.4p1-22.amzn2.0.6 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2023 | openssh | * | Up to (excluding) 8.7p1-8.amzn2023.0.9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | dropbear | * | Up to (including) 2018.76-5+deb10u1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | dropbear | * | Up to (including) 2020.81-3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | dropbear | * | Up to (including) 2022.83-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | dropbear | * | Up to (including) 2022.83-3 | |||||
- 攻击路径 N/A
- 攻击复杂度 N/A
- 权限要求 N/A
- 影响范围 N/A
- 用户交互 N/A
- 可用性 N/A
- 保密性 N/A
- 完整性 N/A
| CWE-ID | 漏洞类型 |
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