PT-2025-1234 · Unknown · Ipv6-In-Ipv4 Tunneling

Angelos Beitis + 1 · Published 2025-01-14 · Updated 2025-01-29 · CVE-2025-23019

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-in-IPv4 tunneling (RFC 4213) versions not specified

Description The issue is related to the IPv6-in-IPv4 tunneling protocol, which allows an attacker to spoof and route traffic via an exposed network interface. This can be exploited by a remote attacker to conduct attacks, such as spoofing a trusted object, by sending a specially crafted packet with two IP headers. The vulnerability is associated with insufficient source channel verification in packet tunneling protocols.

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:2025-00614

CVE-2025-23019

Affected Products

Ipv6-In-Ipv4 Tunneling

References · 11

• https://bdu.fstec.ru/vul/2025-00614 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-23019 · Security Note
• https://t.me/true_secator/6628 · Telegram Post
• https://t.me/cvedetector/15351 · Telegram Post
• https://kb.cert.org/vuls/id/199397 · Note
• https://top10vpn.com/research/tunneling-protocol-vulnerability · Note
• https://twitter.com/CVEnew/status/1880988229115199856 · Twitter Post
• https://t.me/cvenotify/109035 · Telegram Post
• https://papers.mathyvanhoef.com/usenix2025-tunnels.pdf · Note
• https://datatracker.ietf.org/doc/html/rfc4213 · Note
• https://twitter.com/SEI_CMU/status/1882147898290577469 · Twitter Post