CVE-2026-43617
| Summary |
Rsync version 3.4.2 and prior contain an authorization bypass vulnerability in the rsync daemon's hostname-based access control list enforcement when configured with chroot. Attackers can bypass hostname-based deny rules by controlling the PTR record for their source IP address, allowing connections from hostnames that administrators intended to deny when reverse DNS resolution fails and defaults to UNKNOWN.
|
| Publication Date |
May 20, 2026, 11:16 a.m. |
| Registration Date |
May 21, 2026, 4:09 a.m. |
| Last Update |
May 20, 2026, 10:58 p.m. |
|
CVSS3.1 : MEDIUM
|
| スコア |
4.8
|
| Vector |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |
| 攻撃元区分(AV) |
ネットワーク |
| 攻撃条件の複雑さ(AC) |
高 |
| 攻撃に必要な特権レベル(PR) |
不要 |
| 利用者の関与(UI) |
不要 |
| 影響の想定範囲(S) |
変更なし |
| 機密性への影響(C) |
低 |
| 完全性への影響(I) |
低 |
| 可用性への影響(A) |
なし |
Related information, measures and tools
Common Vulnerabilities List