CVE-2023-1715

CRITICAL 9.0EPSS 0.6%

A logic error when using mb_strpos() to check for potential XSS payload in Bitrix24 22.0.300 allows attackers to bypass XSS sanitisation via placing HTML tags at the begining of the payload.

CVSS v3.1: 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v3.1: 9.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS: 0.59% chance of exploitation in the next 30 days, 46th percentile
Published: 2023-11-01
Updated: 2024-09-05

Proof-of-concept exploits (1)

https://starlabs.sg/advisories/23/23-1715/

References

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