CVE-2023-22735

Katalog CVE

CVSS 4.6 · Medium EPSS 0,52%

Kerentanan Interpretation Conflict pada zulip server. Skor CVSS 3.1 4.6 (Medium) menurut NVD.

Deskripsi (NVD)

Zulip is an open-source team collaboration tool. In versions of zulip prior to commit `2f6c5a8` but after commit `04cf68b` users could upload files with arbitrary `Content-Type` which would be served from the Zulip hostname with `Content-Disposition: inline` and no `Content-Security-Policy` header, allowing them to trick other users into executing arbitrary Javascript in the context of the Zulip application. Among other things, this enables session theft. Only deployments which use the S3 storage (not the local-disk storage) are affected, and only deployments which deployed commit 04cf68b45ebb5c03247a0d6453e35ffc175d55da, which has only been in `main`, not any numbered release. Users affected should upgrade from main again to deploy this fix. Switching from S3 storage to the local-disk storage would nominally mitigate this, but is likely more involved than upgrading to the latest `main` which addresses the issue.

Rincian

Terbit di NVD

7 Februari 2023

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

4.6 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-436: Interpretation Conflict

EPSS (30 hari)

0,52% peluang dieksploitasi; lebih tinggi dari 42,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/zulip/zulip/security/advisories/GHSA-wm83-3764-5wqh patch · advisory vendor
• https://github.com/zulip/zulip/commit/2f6c5a883e106aa82a570d3d1f243993284b70f3 patch
• https://github.com/zulip/zulip/commit/04cf68b45ebb5c03247a0d6453e35ffc175d55da product
• https://zulip.readthedocs.io/en/latest/production/upgrade-or-modify.html#upgrading-from-a-git-repository not applicable