PT-2023-24199 · Nextcloud · Nextcloud Contacts

Christophwurst · Published 2023-05-30 · Updated 2023-06-06 · CVE-2023-33182

Positive Technologies (AI Summary)

CVSS v3.1

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N

Name of the Vulnerable Software and Affected Versions Nextcloud Contacts app versions prior to 4.2.4 Nextcloud Contacts app versions prior to 5.0.3

Description The issue concerns the handling of unsanitized SVG files in the Contacts app for Nextcloud. These files are converted into JavaScript blobs, which the Avatar component cannot render. Although the missing sanitization is present, it does not seem to be exploitable due to this specific implementation.

Recommendations For versions prior to 4.2.4, upgrade to version 4.2.4. For versions prior to 5.0.3, upgrade to version 5.0.3.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2023-33182

GHSA-HXR6-CX85-GCJX

Affected Products

Nextcloud Contacts

References · 6

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/33xxx/CVE-2023-33182.json · Exploit
• https://github.com/nextcloud/contacts/pull/3199 · Patch
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hxr6-cx85-gcjx · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-33182 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-33182 · Security Note
• https://hackerone.com/reports/1789602 · Note