VulnerabilityAnalyzed
CVE-2020-5735
Amcrest Cameras and NVR Stack-based Buffer Overflow Vulnerability
KEVHIGH 8.8EPSS 36.2%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Amcrest cameras and NVR are vulnerable to a stack-based buffer overflow over port 37777. An authenticated remote attacker can abuse this issue to crash the device and possibly execute arbitrary code.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 36.22% probability · 98th percentile
- CISA KEV
- Listed 3 November 2021 · due 3 May 2022
- Weakness
- CWE-121, CWE-787
- Affected
- amcrest/1080-lite 8ch firmware · amcrest/amdv10814-h5 firmware · amcrest/ipm-721 firmware · amcrest/ip2m-841 firmware · amcrest/ip2m-841-v3 firmware · amcrest/ip2m-853ew firmware · amcrest/ip2m-858w firmware · amcrest/ip2m-866w firmware · amcrest/ip2m-866ew firmware · amcrest/ip4m-1053ew firmware · amcrest/ip8m-2454ew firmware · amcrest/ip8m-2493eb firmware · amcrest/ip8m-2496eb firmware · amcrest/ip8m-2597e firmware · amcrest/ip8m-mb2546ew firmware · amcrest/ip8m-mt2544ew firmware · amcrest/ip8m-t2499ew firmware · amcrest/ipm-hx1 firmware
- Source
- vulnreport@tenable.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2020-5735
References
- http://packetstormsecurity.com/files/157164/Amcrest-Dahua-NVR-Camera-IP2M-841-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
- https://www.tenable.com/security/research/tra-2020-20Third Party Advisory
- http://packetstormsecurity.com/files/157164/Amcrest-Dahua-NVR-Camera-IP2M-841-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
- https://www.tenable.com/security/research/tra-2020-20Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-5735US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.