CVE-2021-20247
isync - security update
7.4
HIGH
CVSS 3.1
EPSS 1.9%
描述
A flaw was found in mbsync before v1.3.5 and v1.4.1. Validations of the mailbox names returned by IMAP LIST/LSUB do not occur allowing a malicious or compromised server to use specially crafted mailbox names containing '..' path components to access data outside the designated mailbox on the opposite end of the synchronization channel. The highest threat from this vulnerability is to data confidentiality and integrity.
如何修補 CVE-2021-20247
要修補 CVE-2021-20247,請將受影響套件升級到下列已修補版本。
- —升級至 1.3.0-2.1 或更新版本
- —升級至 1.2.1-2+deb9u1 或更新版本
CVE-2021-20247 正在被利用嗎?
低 — EPSS 為 1.9%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 1.3.0-2.1
- from 0, < 1.2.1-2+deb9u1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |