ID

VAR-201710-0035

CVE

CVE-2015-6358

TITLE

Embedded devices use non-unique X.509 certificates and SSH host keys

DESCRIPTION

Multiple Cisco embedded devices use hardcoded X.509 certificates and SSH host keys embedded in the firmware, which allows remote attackers to defeat cryptographic protection mechanisms and conduct man-in-the-middle attacks by leveraging knowledge of these certificates and keys from another installation, aka Bug IDs CSCuw46610, CSCuw46620, CSCuw46637, CSCuw46654, CSCuw46665, CSCuw46672, CSCuw46677, CSCuw46682, CSCuw46705, CSCuw46716, CSCuw46979, CSCuw47005, CSCuw47028, CSCuw47040, CSCuw47048, CSCuw47061, CSCuw90860, CSCuw90869, CSCuw90875, CSCuw90881, CSCuw90899, and CSCuw90913. The encryption key is hard-coded (CWE-321) SEC Consult of Stefan Viehböck According to the survey, many embedded devices are not unique X.509 Certificate and SSH It is said that it is accessible from the Internet using a host key. A hard-coded key in a firmware image or a repository stored by scanning the Internet scans.io ( In particular SSH And the result of SSL Certificate ) A device that uses a certificate whose fingerprint matches the data of can be determined to be vulnerable. Affected devices include household routers and IP From the camera VoIP Wide range of products. CWE-321: Use of Hard-coded Cryptographic Key http://cwe.mitre.org/data/definitions/321.html scans.io https://scans.io/ SSH Result of https://scans.io/series/ssh-rsa-full-ipv4 SSL Certificate https://scans.io/study/sonar.ssl In many vulnerable devices, certificate and key reuse is limited to a limited product line by a specific developer, but there are several examples where multiple developers use the same certificate or key. Or exist. These are common SDK Firmware developed using, or ISP Provided by OEM The root cause is the use of device firmware. Vulnerable equipment is impersonation and intermediary (man-in-the-middle) There is a possibility of being attacked or deciphering the communication contents. Perhaps the attacker can obtain authentication information and other sensitive information and use it for further attacks. Survey results and certificates SSH For more information on systems affected by host key issues, see SEC Consult See the blog post. Certificate https://www.sec-consult.com/download/certificates.html SSH Host key https://www.sec-consult.com/download/ssh_host_keys.html SEC Consult http://blog.sec-consult.com/2015/11/house-of-keys-industry-wide-https.htmlA remote attacker impersonates a user or intermediary (man-in-the-middle) There is a possibility of being attacked or deciphering the communication contents. As a result, confidential information may be leaked. The Cisco RV320 Dual Gigabit WAN VPN is a router product from Cisco Systems, USA. Multiple Cisco Products are prone to an information-disclosure vulnerability. Successful exploits will lead to other attacks. This issue is being tracked by Cisco Bug IDs CSCuw46610, CSCuw46620, CSCuw46637, CSCuw46654, CSCuw46665, CSCuw46672, CSCuw46677, CSCuw46682, CSCuw46705, CSCuw46716, CSCuw46979, CSCuw47005, CSCuw47028, CSCuw47040, CSCuw47048, CSCuw47061, CSCuw90860, CSCuw90869, CSCuw90875, CSCuw90881, CSCuw90899, and CSCuw90913. The flaw stems from the fact that the program does not generate unique keys and certificates

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

lack of information

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Stefan Viehböck of SEC Consult.

SOURCES

LAST UPDATE DATE

2024-11-23T22:25:43.673000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE