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CVE-2017-8229

9.8 · CRITICAL
Published Jul 3, 2019 amcrest CWE-255 EPSS 73.96% (99th pctl)

Overview

CVE-2017-8229 is a critical-severity vulnerability affecting amcrest ipm-721s_firmware. It was published on July 3, 2019 and has a CVSS 3.0 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical Description

Amcrest IPM-721S V2.420.AC00.16.R.20160909 devices allow an unauthenticated attacker to download the administrative credentials. If the firmware version V2.420.AC00.16.R 9/9/2016 is dissected using binwalk tool, one obtains a _user-x.squashfs.img.extracted archive which contains the filesystem set up on the device that many of the binaries in the /usr folder. The binary "sonia" is the one that has the vulnerable function that sets up the default credentials on the device. If one opens this binary in IDA-pro one will notice that this follows a ARM little endian format. The function sub_436D6 in IDA pro is identified to be setting up the configuration for the device. If one scrolls to the address 0x000437C2 then one can see that /current_config is being set as an ALIAS for /mnt/mtd/Config folder on the device. If one TELNETs into the device and navigates to /mnt/mtd/Config folder, one can observe that it contains various files such as Account1, Account2, SHAACcount1, etc. This means that

Remediation

Check the references section for vendor advisories and patches from amcrest. Update ipm-721s_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status
amcrest ipm-721s_firmware 0 Affected

Frequently Asked Questions

What is CVE-2017-8229?

CVE-2017-8229 is a critical-severity vulnerability affecting amcrest ipm-721s_firmware. It was published on July 3, 2019 and has a CVSS 3.0 base score of 9.8 (CRITICAL).

How severe is CVE-2017-8229?

This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-8229?

Check the references section for vendor advisories and patches from amcrest. Update ipm-721s_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-8229?

CyberStrike's AI-powered security agents can automatically detect CVE-2017-8229 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.