PT-2020-12860 · Sourcefabric · Sourcefabric Newscoop

V-Rico · Published 2020-05-19 · Updated 2020-05-20 · CVE-2020-11807

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Sourcefabric Newscoop version 4.4.7

Description The issue allows an authenticated user to execute arbitrary PHP code, and sometimes terminal commands, on a server. This is achieved by making an avatar update and then visiting the avatar file under the "/images/" path. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.

Recommendations For Sourcefabric Newscoop version 4.4.7, consider restricting access to the /images/ path to prevent exploitation until a patch is available. As a temporary workaround, avoid using the avatar update feature until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2020-11807

Affected Products

Sourcefabric Newscoop

References · 5

• 🔥 https://gist.github.com/V-Rico/82e9e52ac451dc20eef87b0999b3b1ee · Exploit
• https://github.com/sourcefabric/Newscoop/blob/3df835637609a5a42530b2a4611177c634ad6274/newscoop/library/Newscoop/Image/ImageService.php#L226 · Patch
• https://osv.dev/vulnerability/CVE-2020-11807 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-11807 · Security Note
• https://t.me/cvenotify/3916 · Telegram Post