PT-2025-1141 · Ipv6 · Ipv6

Mathy Vanhoef · Published 2025-01-14 · Updated 2025-03-08 · CVE-2025-23018

Positive Technologies (AI Summary)

CVSS v2.0

6.6

Medium

Base vector

AV:N/AC:H/Au:N/C:P/I:P/A:C

Name of the Vulnerable Software and Affected Versions IPv6 versions (affected versions not specified)

Description The issue concerns IPv4-in-IPv6 and IPv6-in-IPv6 tunneling, as defined in RFC 2473, which does not require validation or verification of the source of a network packet. This allows an attacker to spoof and route arbitrary traffic via an exposed network interface.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-940

Related Identifiers

BDU:2025-00420

CVE-2025-23018

Affected Products

Ipv6

References · 14

• https://bdu.fstec.ru/vul/2025-00420 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-23018 · Security Note
• https://github.com/vanhoefm/tunneltester · Note
• https://t.me/true_secator/6628 · Telegram Post
• https://t.me/cvedetector/15352 · Telegram Post
• https://top10vpn.com/research/tunneling-protocol-vulnerability/#attack-details · Note
• https://top10vpn.com/research/tunneling-protocol-vulnerability · Note
• https://twitter.com/CVEnew/status/1880988228175757639 · Twitter Post
• https://twitter.com/tech_wiki/status/1881969756556968198 · Twitter Post
• https://datatracker.ietf.org/doc/html/rfc2473 · Note
• https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf · Note
• https://t.me/cvenotify/109034 · Telegram Post
• https://kb.cert.org/vuls/id/199397 · Note
• https://twitter.com/SEI_CMU/status/1882147898290577469 · Twitter Post