CVE-2017-13719

What it is

The Amcrest IPM-721S Amcrest_IPC-AWXX_Eng_N_V2.420.AC00.17.R.20170322 allows HTTP requests that permit enabling various functionalities of the camera by using HTTP APIs, instead of the web management interface that is provided by the application. This HTTP API receives the credentials as base64 encoded in the Authorization HTTP header. However, a missing length check in the code allows an attacker to send a string of 1024 characters in the password field, and allows an attacker to exploit a memory corruption issue. This can allow an attacker to circumvent the account protection mechanism and brute force the credentials. If the firmware version Amcrest_IPC-AWXX_Eng_N_V2.420.AC00.17.R.20170322 is dissected using the binwalk tool, one obtains a _user-x.squashfs.img.extracted archive which contains the filesystem set up on the device that has many of the binaries in the /usr folder. The binary "sonia" is the one that has the vulnerable function that performs the credential check in the binary for the HTTP API specification. If we open this binary in IDA Pro we will notice that this follows an ARM little-endian format. The function at address 00415364 in IDA Pro starts the HTTP authentication process. This function calls another function at sub_ 0042CCA0 at address 0041549C. This function performs a strchr operation after base64 decoding the credentials, and stores the result on the stack, which results in a stack-based buffer overflow.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

4.5% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2017-08-28 00:00 UTC ReservedThe CVE id was reserved by its CNA
2. 2019-07-03 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-06-17 01:05 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 4.5% in the next 30 days (EPSS).
• Severity: 9.8 CRITICAL (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2019-07-03 20:15 UTC

Last modified

2026-06-17 01:05 UTC

Exploit probability

4.5% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• Amcrest ipm-721s Firmware amcrest_ipc-awxx_eng_n_v2.420.ac00.17.r.20170322

Attack profile CVSS 3.0 · 9.8

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2017-13719.md and follow it. Check whether this project is affected by CVE-2017-13719. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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