CVE-2021-38432
published 2021-10-15CVE-2021-38432: FATEK Automation Communication Server Versions 1.13 and prior lacks proper validation of user-supplied data, which could result in a stack-based buffer…
PriorityP263critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
1.76%
75.2th percentile
FATEK Automation Communication Server Versions 1.13 and prior lacks proper validation of user-supplied data, which could result in a stack-based buffer overflow condition and allow an attacker to remotely execute code.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| fatek | communication_server_firmware | <= 1.13 | — |
| fatek_automation | communication_server | All – 1.13 | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Target product is FATEK Automation Communication Server versions 1.13 and prior; detect exploitation attempts against this service as a stack-based buffer overflow triggered by malformed/oversized user-supplied data sent remotely. ↗
- →Vulnerability is exploitable remotely with no authentication and low attack complexity (CVSS AV:N/AC:L/PR:N/UI:N); monitor for unexpected inbound connections to the FATEK Communication Server from untrusted/internet-facing sources. ↗
- →No known public exploits exist at time of advisory; prioritize network-level controls (firewall, VPN isolation) and alert on any direct internet-facing exposure of the Communication Server. ↗
- ·FATEK Automation did not respond to CISA's requests to coordinate mitigation; no vendor patch is confirmed available. Users should contact FATEK customer support directly for status. ↗
- ·Affected versions are Communication Server 1.13 and all prior releases; no fixed version is identified in the advisory. ↗
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
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CISA ICS
FATEK Automation Communication Server
cisa_ics·2021-11-16·CVSS 9.8
[CRITICAL] FATEK Automation Communication Server
## Archived Content In an effort to keep CISA.gov current, the archive contains outdated information that may not reflect current policy or programs.
ICS Advisory
##
FATEK Automation Communication Server
Last RevisedNovember 16, 2021
Alert CodeICSA-21-280-07
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: FATEK Automation
- Equipment: Communication Server
- Vulnerability: Stack-based Buffer Overflow
## 2. RISK EVALUATION
Successful exploitation of this vulnerability may allow remote code execution.
## 3. TECHNICAL DETAILS
## 3.1 AFFECTED PRODUCTS
The following versions of Communication Server are affected:
- Communication Server: Versions 1.13 and prior
## 3.2 VULNERABILITY O
GHSA
GHSA-2qjg-mr5r-c2hw: FATEK Automation Communication Server Versions 1
ghsa_unreviewed·2022-05-24
CVE-2021-38432 [CRITICAL] CWE-121 GHSA-2qjg-mr5r-c2hw: FATEK Automation Communication Server Versions 1
FATEK Automation Communication Server Versions 1.13 and prior lacks proper validation of user-supplied data, which could result in a stack-based buffer overflow condition and allow an attacker to remotely execute code.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-10-15
Published