ID

VAR-201709-0027

CVE

CVE-2015-7256

TITLE

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

DESCRIPTION

ZyXEL NWA1100-N, NWA1100-NH, NWA1121-NI, NWA1123-AC, and NWA1123-NI access points; P-660HN-51, P-663HN-51, VMG1312-B10A, VMG1312-B30A, VMG1312-B30B, VMG4380-B10A, VMG8324-B10A, VMG8924-B10A, VMG8924-B30A, and VSG1435-B101 DSL CPEs; PMG5318-B20A GPONs; SBG3300-N000, SBG3300-NB00, and SBG3500-N000 small business gateways; GS1900-8 and GS1900-24 switches; and C1000Z, Q1000, FR1000Z, and P8702N project models use non-unique X.509 certificates and SSH host keys. Many embedded devices are not unique X.509 Certificate and SSH Spoofing and intermediary because host key is used (man-in-the-middle) There is a possibility of being attacked and attacks such as decryption of communication contents. 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. ZyXEL Access Point NWA1100-N is a wireless network receiving device from ZyXEL Technology. Multiple ZyXEL Products are prone to an information-disclosure vulnerability. Successful exploits will lead to other attacks

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

encryption problem

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Stefan Viehb?ck of SEC Consult.

SOURCES

LAST UPDATE DATE

2024-11-23T22:25:43.631000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE