要点
- CVE-2023-37259 是影响 matrix-react-sdk (matrix-react-sdk project), matrix-react-sdk 的中危 (CVSS 5.4)漏洞。
- 未来 30 天内被利用的概率（EPSS）：0.45%，高于 39.3% 的漏洞。
- 修复：升级到 3.76.0 或更高版本。
Description
Description
The Export Chat feature includes certain attacker-controlled elements in the generated document without sufficient escaping, leading to stored XSS.
Impact
Since the Export Chat feature generates a separate document, an attacker can only inject code run from the null origin, restricting the impact.
However, the attacker can still potentially use the XSS to leak message contents. A malicious homeserver is a potential attacker since the affected inputs are controllable server-side.
Patches
This was patched in matrix-react-sdk 3.76.0.
Workarounds
None, other than not using the Export Chat feature.
References
N/A
NVD description
matrix-react-sdk is a react-based SDK for inserting a Matrix chat/voip client into a web page. The Export Chat feature includes certain attacker-controlled elements in the generated document without sufficient escaping, leading to stored Cross site scripting (XSS). Since the Export Chat feature generates a separate document, an attacker can only inject code run from the `null` origin, restricting the impact. However, the attacker can still potentially use the XSS to leak message contents. A malicious homeserver is a potential attacker since the affected inputs are controllable server-side. This issue has been addressed in commit `22fcd34c60` which is included in release version 3.76.0. Users are advised to upgrade. The only known workaround for this issue is to disable or to not use the Export Chat feature.
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