nextcloud nextcloud_mail 信息暴露

CVE编号

CVE-2021-32707

利用情况

暂无

补丁情况

N/A

披露时间

2021-07-13

漏洞描述

Nextcloud Mail is a mail app for Nextcloud. In versions prior to 1.9.6, the Nextcloud Mail application does not, by default, render images in emails to not leak the read state. The privacy filter failed to filter images with a `background-image` CSS attribute. Note that the images were still passed through the Nextcloud image proxy, and thus there was no IP leakage. The issue was patched in version 1.9.6 and 1.10.0. No workarounds are known to exist.

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。

参考链接
https://github.com/nextcloud/mail/pull/5189
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xxp...
https://hackerone.com/reports/1215251

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
	应用	nextcloud	nextcloud_mail	*		Up to (excluding) 1.9.6

CVSS3评分 4.3

• 攻击路径 网络
• 攻击复杂度 低
• 权限要求 低
• 影响范围 未更改
• 用户交互 无
• 可用性 无
• 保密性 无
• 完整性 低

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CWE-ID 漏洞类型 CWE-200 信息暴露