CVE-2023-5246 — Authentication Bypass by Capture-replay in SICK Flexi Soft Gateways with Partnum

Authentication Bypass by Capture-replay in SICK Flexi Soft Gateways with Partnumbers 1044073, 1127717, 1130282, 1044074, 1121597, 1099832, 1051432, 1127487, 1069070, 1112296, 1044072, 1121596, 1099830 allows an unauthenticated remote attacker to potentially impact the availabilit

01What is this vulnerability?

Authentication Bypass by Capture-replay in SICK Flexi Soft Gateways with Partnumbers 1044073, 1127717, 1130282, 1044074, 1121597, 1099832, 1051432, 1127487, 1069070, 1112296, 1044072, 1121596, 1099830 allows an unauthenticated remote attacker to potentially impact the availability, integrity and confidentiality of the gateways via an authentication bypass by capture-replay.

02Affected products

Vendor	Product	Versions
SICK AG	FX0	GMOD00000 — vers:all/*
SICK AG	FX0	GMOD00010 — vers:all/*
SICK AG	FX0	GMOD00030 — vers:all/*
SICK AG	FX0	GPNT00000 — vers:all/*
SICK AG	FX0	GPNT00010 — vers:all/*
SICK AG	FX0	GPNT00030 — vers:all/*
SICK AG	FX0	GETC00000 — vers:all/*
SICK AG	FX0	GETC00010 — vers:all/*
SICK AG	FX3	GEPR00000 — vers:all/*
SICK AG	FX3	GEPR00010 — vers:all/*
SICK AG	FX0	GENT00000 — vers:all/*
SICK AG	FX0	GENT00010 — vers:all/*
SICK AG	FX0	GENT00030 — vers:all/*

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-10-23T12:22:19.895Z
• Last modified: 2024-09-11T16:17:17.559Z

09References

• sick.com — https://sick.com/psirt
• sick.com — https://sick.com/.well-known/csaf/white/2023/sca-2023-0011.pdf
• sick.com — https://sick.com/.well-known/csaf/white/2023/sca-2023-0011.json