CVE-2017-13719
Amcrest IPM-721S Buffer Overflow Vulnerability
Description
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.
INFO
Published Date :
July 3, 2019, 8:15 p.m.
Last Modified :
July 17, 2019, 3:09 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2017-13719 has a 1 public PoC/Exploit
available at Github.
Go to the Public Exploits
tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2017-13719
.
URL | Resource |
---|---|
http://packetstormsecurity.com/files/153224/Amcrest-IPM-721S-Credential-Disclosure-Privilege-Escalation.html | Third Party Advisory VDB Entry |
https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Amcrest_sec_issues.pdf | Exploit Third Party Advisory |
https://seclists.org/bugtraq/2019/Jun/8 | Mailing List Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
This repo contains alls the vulnerabilities identified as a part of security research against IoT devices
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-13719
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-13719
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jul. 17, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://packetstormsecurity.com/files/153224/Amcrest-IPM-721S-Credential-Disclosure-Privilege-Escalation.html No Types Assigned http://packetstormsecurity.com/files/153224/Amcrest-IPM-721S-Credential-Disclosure-Privilege-Escalation.html Third Party Advisory, VDB Entry Changed Reference Type https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Amcrest_sec_issues.pdf No Types Assigned https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Amcrest_sec_issues.pdf Exploit, Third Party Advisory Changed Reference Type https://seclists.org/bugtraq/2019/Jun/8 No Types Assigned https://seclists.org/bugtraq/2019/Jun/8 Mailing List, Third Party Advisory Added CWE CWE-119 Added CPE Configuration AND OR *cpe:2.3:o:amcrest:ipm-721s_firmware:amcrest_ipc-awxx_eng_n_v2.420.ac00.17.r.20170322:*:*:*:*:*:*:* OR cpe:2.3:h:amcrest:ipm-721s:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-13719
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2017-13719
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.60 }} -1.55%
score
0.87766
percentile