CVE-2020-13556
published 2020-12-11CVE-2020-13556: An out-of-bounds write vulnerability exists in the Ethernet/IP server functionality of EIP Stack Group OpENer 2.3 and development commit 8c73bf3. A specially…
PriorityP265critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
4.52%
90.3th percentile
An out-of-bounds write vulnerability exists in the Ethernet/IP server functionality of EIP Stack Group OpENer 2.3 and development commit 8c73bf3. A specially crafted series of network requests can lead to remote code execution. An attacker can send a sequence of requests to trigger this vulnerability.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| opener_project | opener | — | — |
Detection & IOCsextracted from sources · hover to see the quote
snort↗
54832
snort↗
56059
snort↗
56060
- →Exploitation targets the Ethernet/IP server functionality; detection should focus on crafted sequences of network requests to the EIP/CIP service port. ↗
- →Use Snort rules 54832, 56059, and 56060 via Firepower Management Center or Snort.org for the most current detection coverage; rules may be updated as additional vulnerability information becomes available. ↗
- ·Both OpENer version 2.3 and development commit 8c73bf3 are confirmed vulnerable; ensure detection and patching coverage applies to both the release version and the specific dev commit. ↗
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
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Talos
Vulnerability Spotlight: DoS, code execution vulnerabilities in EIP Stack Group OpENer
blogs_talos·2020-12-02·CVSS 7.5
[HIGH] Vulnerability Spotlight: DoS, code execution vulnerabilities in EIP Stack Group OpENer
Martin Zeiser and Jared Rittle of Cisco Talos discovered these vulnerabilities. Blog by Jon Munshaw.
## Executive summary
Cisco Talos recently discovered two vulnerabilities in the Ethernet/IP function of EIP Stack Group
OpENer. OpENer is an Ethernet/IP stack for I/O adapter devices. It supports multiple I/O and explicit connections and includes objects and services for making Ethernet/IP-compliant products as defined in the ODVA specifications. The software contains two vulnerabilities that could allow an attacker to execute code on the victim machine and cause a denial of service, respectively.
In accordance with our coordinated disclosure policy, Cisco Talos worked with EIP Stack Group to disclose these vulnerabilities and ensure that an update is available.
## Vulnerability details
Talos
Vulnerability Spotlight: DoS, code execution vulnerabilities in EIP Stack Group OpENer
blogs_talos·2020-12-02·CVSS 7.5
[HIGH] Vulnerability Spotlight: DoS, code execution vulnerabilities in EIP Stack Group OpENer
## Vulnerability Spotlight: DoS, code execution vulnerabilities in EIP Stack Group OpENer
Martin Zeiser and Jared Rittle of Cisco Talos discovered these vulnerabilities. Blog by Jon Munshaw.
## Executive summary
Cisco Talos recently discovered two vulnerabilities in the Ethernet/IP function of EIP Stack Group OpENer. OpENer is an Ethernet/IP stack for I/O adapter devices. It supports multiple I/O and explicit connections and includes objects and services for making Ethernet/IP-compliant products as defined in the ODVA specifications. The software contains two vulnerabilities that could allow an attacker to execute code on the victim machine and cause a denial of service, respectively.
In accordance with our coordinated disclosure policy, Cisco Talos worked with EIP Stack Group to discl
2020-12-11
Published