matrix-org/matrix-react-sdk · Security
matrix-react-sdk vulnerable to XSS in Export Chat feature
- GHSA ID
- GHSA-c9vx-2g7w-rp65
- CVE ID
- CVE-2023-37259
- Severity
- medium
- Published
- Updated
- CVSS
- 6.1 · CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
- CVSS v3
- 6.1 · CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
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
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CWE-80 · Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
References
- https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-c9vx-2g7w-rp65 ↗
- https://github.com/matrix-org/matrix-react-sdk/commit/22fcd34c606f32129ebc967fc21f24fb708a98b8 ↗
- https://github.com/matrix-org/matrix-react-sdk/releases/tag/v3.76.0 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2023-37259 ↗
- https://github.com/advisories/GHSA-c9vx-2g7w-rp65 ↗