CVE-2020-10136 (GCVE-0-2020-10136)

Vulnerability from cvelistv5 – Published: 2020-06-02 08:35 – Updated: 2025-11-03 20:33
VLAI
Title
IP-in-IP protocol allows a remote, unauthenticated attacker to route arbitrary network traffic
Summary
IP-in-IP protocol specifies IP Encapsulation within IP standard (RFC 2003, STD 1) that decapsulate and route IP-in-IP traffic is vulnerable to spoofing, access-control bypass and other unexpected behavior due to the lack of validation to verify network packets before decapsulation and routing.
Severity
No CVSS data available.
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Impacted products
Date Public
2020-06-01 00:00
Show details on NVD website

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      "solutions": [
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          "lang": "en",
          "value": "Customers should apply the latest patch provided by the affected vendor that addresses this issue and prevents unspecified IP-in-IP packets from being processed. Devices manufacturers are urged to disable IP-in-IP in their default configuration and require their customers to explicitly configure IP-in-IP as and when needed."
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      "workarounds": [
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          "value": "Users can block IP-in-IP packets by filtering IP protocol number 4. Note this filtering is for the IPv4 Protocol (or IPv6 Next Header) field value of 4 and not IP protocol version 4 (IPv4)."
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    "datePublished": "2020-06-02T08:35:12.921Z",
    "dateReserved": "2020-03-05T00:00:00.000Z",
    "dateUpdated": "2025-11-03T20:33:32.981Z",
    "state": "PUBLISHED"
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