CVE-2026-102822— russh: negotiating a MAC-requiring block cipher (CTR/CBC) with mac=none causes a slice-index-out-of-range panic
一分钟漏洞结论
影响对象
Eugeny russh
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Russh is a Rust SSH client and server library. Prior to 0.63.1, a connection configured to permit mac=none can negotiate it with a MAC-requiring CTR or CBC block cipher because the selection logic validates needs_mac() only when MAC selection fails. A remote p
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2026-102822 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
russh: negotiating a MAC-requiring block cipher (CTR/CBC) with mac=none causes a slice-index-out-of-range panic
来源: CVE Program / CVE List V5
Vulnerability Description
Russh is a Rust SSH client and server library. Prior to 0.63.1, a connection configured to permit mac=none can negotiate it with a MAC-requiring CTR or CBC block cipher because the selection logic validates needs_mac() only when MAC selection fails. A remote peer can then send a packet with a decrypted length of zero, causing russh/src/cipher/mod.rs to shrink the previously read block before indexing buffer.buffer[16..], which panics and terminates the connection task. This issue is fixed in version 0.63.1.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
来源: CVE Program / CVE List V5
Vulnerability Type
对数组索引的验证不恰当
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-102822 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2026-102822 的情报信息
请登录查看更多情报信息。
CVE-2026-102822 其他参考 (3)
-
https://github.com/Eugeny/russh/releases/tag/v0.63.1 x_refsource_MISC
-
https://github.com/Eugeny/russh/security/advisories/GHSA-p8qx-h547-fjw9 x_refsource_CONFIRM
同批安全公告 · Eugeny · 2026-09-29 · 共 6 条
| CVE-2026-102823 | 7.5 HIGH | russh: Client-side channel-scoped Handler callbacks fire for channel IDs the client never |
| CVE-2026-102821 | 6.5 MEDIUM | Russh: Unbounded memory exhaustion via CHANNEL_OPEN flood during a client-stalled rekey |
| CVE-2026-102820 | 6.2 MEDIUM | pageant: Out-of-bounds read / oversized allocation in `pageant` MemoryMap::read via a mali |
| CVE-2026-102824 | 4.3 MEDIUM | Russh: Missing X25519 zero-point validation in hybrid ML-KEM key exchange |
| CVE-2026-102825 | 3.7 LOW | Russh: Configured server auth-attempt cap is not enforced in the USERAUTH_REQUEST runtime |
IV. Related Vulnerabilities
Same product: russh
-
CVE-2026-102825
Russh: Configured server auth-attempt cap is not enforced in -
CVE-2026-102824
Russh: Missing X25519 zero-point validation in hybrid ML-KEM -
CVE-2026-102823
russh: Client-side channel-scoped Handler callbacks fire for -
CVE-2026-102821
Russh: Unbounded memory exhaustion via CHANNEL_OPEN flood du -
CVE-2026-102820
pageant: Out-of-bounds read / oversized allocation in `pagea
Same vendor: Eugeny
-
CVE-2026-102825
Russh: Configured server auth-attempt cap is not enforced in -
CVE-2026-102824
Russh: Missing X25519 zero-point validation in hybrid ML-KEM -
CVE-2026-102823
russh: Client-side channel-scoped Handler callbacks fire for -
CVE-2026-102821
Russh: Unbounded memory exhaustion via CHANNEL_OPEN flood du -
CVE-2026-102820
pageant: Out-of-bounds read / oversized allocation in `pagea
V. Comments for CVE-2026-102822
暂无评论