CVE-2022-43501

2023-02-1000:00:00

CWE-330

jpcert

www.cve.org

kasago

tcp/ip

isn_generation

insecure_connection

spoofing

zuken_elmic

9.3 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

50.5%

JSON

KASAGO TCP/IP stack provided by Zuken Elmic generates ISNs(Initial Sequence Number) for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones or spoof future ones.

CNA Affected

[
  {
    "vendor": "ZUKEN Elmic",
    "product": "Kasago IPv6/v4 Dual",
    "versions": [
      {
        "version": "prior to Ver6.0.1.34",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "ZUKEN Elmic",
    "product": "Kasago IPv4",
    "versions": [
      {
        "version": "prior to Ver6.0.1.34",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "ZUKEN Elmic",
    "product": "Kasago IPv4 Light",
    "versions": [
      {
        "version": "prior to Ver6.0.1.34",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "ZUKEN Elmic",
    "product": "Kasago mobile IPv6",
    "versions": [
      {
        "version": "prior to Ver6.0.1.34",
        "status": "affected"
      }
    ]
  }
]

References

jvn.jp/en/vu/JVNVU99551468/

www.elwsc.co.jp/news/6352