PT-2020-13659 · Bitrix+1 · Bitrix24+1

R0Hack · Published 2020-06-01 · Updated 2020-06-02 · CVE-2020-13758

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Bitrix24 versions through 20.0.950

Description The issue allows for XSS by placing %00 before the payload in the post filter.php file of the Web Application Firewall.

Recommendations For versions through 20.0.950, update to a version that contains a fix for this issue to prevent potential XSS attacks.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-13758

Affected Products

Bitrix

Bitrix24

References · 3

• 🔥 https://blog.deteact.com/bitrix-waf-bypass · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-13758 · Security Note
• https://osv.dev/vulnerability/CVE-2020-13758 · Vendor Advisory