CVE-2022-3786
X.509 Email Address Variable Length Buffer Overflow
描述
A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed a malicious certificate or for an application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address in a certificate to overflow an arbitrary number of bytes containing the `.' character (decimal 46) on the stack. This buffer overflow could result in a crash (causing a denial of service). In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects.
如何修補 CVE-2022-3786
要修補 CVE-2022-3786,請將受影響套件升級到下列已修補版本。
- —升級至 18.12.1-r0 或更新版本
- —升級至 3.0.7-r0 或更新版本
- —升級至 3.0.7-r0 或更新版本
CVE-2022-3786 正在被利用嗎?
可能 — EPSS 為 92.5%,屬於高被利用機率區間,建議優先修補。
受影響套件(3)
- from 0, < 18.12.1-r0
- >= 3.0.0, < 3.0.7-r0
- from 0, < 3.0.7-r0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |