CVE-2017-8226

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Summary

CVECVE-2017-8226
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-07-03 20:15:00 UTC
Updated2019-07-11 01:49:00 UTC
DescriptionAmcrest IPM-721S V2.420.AC00.16.R.20160909 devices have default credentials that are hardcoded in the firmware and can be extracted by anyone who reverses the firmware to identify them. 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_3DB2FC in IDA pro is identified to be setting up the values at address 0x003DB5A6. The sub_5C057C then sets this value and adds it to the Configuration files in /mnt/mtd/Config/Account1 file.

Risk And Classification

Problem Types: CWE-798

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Amcrest Ipm-721s - All All All
Hardware Amcrest Ipm-721s - All All All
Operating System Amcrest Ipm-721s Firmware All All All All

References

ReferenceSourceLinkTags
Amcrest IPM-721S Credential Disclosure / Privilege Escalation ≈ Packet Storm MISC packetstormsecurity.com Third Party Advisory, VDB Entry
Bugtraq: Newly releases IoT security issues BUGTRAQ seclists.org Mailing List, Third Party Advisory
IoT_vulnerabilities/Amcrest_sec_issues.pdf at master · ethanhunnt/IoT_vulnerabilities · GitHub MISC github.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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