Vulnerability · Published Nov 1, 2023 · Assigned by STAR_Labs

CVE-2023-1713Bitrix24 Remote Command Execution (RCE) via Insecure Temporary File Creation

High 8.8

In plain English

A high-severity unrestricted file upload in Bitrix24 from Bitrix24. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 75% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.6%top 24.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Insecure temporary file creation in bitrix/modules/crm/lib/order/import/instagram.php in Bitrix24 22.0.300 hosted on Apache HTTP Server allows remote authenticated attackers to execute arbitrary code via uploading a crafted ".htaccess" file.

Affected products (as reported)

Vendor	Product	Versions
Bitrix24	Bitrix24	0 – through 22.0.300

Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://starlabs.sg/advisories/23/23-1713/ third-party-advisory