certfr_avis - certfr-2024-avi-0517

CERTFR-2024-AVI-0517

Vulnerability from certfr_avis

Une vulnérabilité a été découverte dans Citrix Secure Access client. Elle permet à un attaquant de provoquer une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des mesures de contournement.

Impacted products

	Vendor	Product	Description
	Citrix	Citrix Secure Access client	Citrix Secure Access client pour Mac et iOS versions antérieures à 24.06.1
	Citrix	Citrix Secure Access client	Citrix Secure Access client pour Linux toutes versions

References

Title

Publication Time

CVE-2024-3661 (GCVE-0-2024-3661)

Vulnerability from cvelistv5

Published

2024-05-06 18:31

Modified

2024-08-28 19:09

Severity ?

7.6 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

CWE

CWE-306 - Missing Authentication for Critical Function
CWE-501 - Trust Boundary Violation

Summary

DHCP can add routes to a client’s routing table via the classless static route option (121). VPN-based security solutions that rely on routes to redirect traffic can be forced to leak traffic over the physical interface. An attacker on the same local network can read, disrupt, or possibly modify network traffic that was expected to be protected by the VPN.

References

URL

Tags

	https://datatracker.ietf.org/doc/html/rfc2131#section-7
	https://datatracker.ietf.org/doc/html/rfc3442#section-7
	https://tunnelvisionbug.com/
	https://www.leviathansecurity.com/research/tunnelvision
	https://news.ycombinator.com/item?id=40279632
	https://arstechnica.com/security/2024/05/novel-attack-against-virtually-all-vpn-apps-neuters-their-entire-purpose/
	https://krebsonsecurity.com/2024/05/why-your-vpn-may-not-be-as-secure-as-it-claims/
	https://issuetracker.google.com/issues/263721377
	https://mullvad.net/en/blog/evaluating-the-impact-of-tunnelvision
	https://www.zscaler.com/blogs/security-research/cve-2024-3661-k-tunnelvision-exposes-vpn-bypass-vulnerability
	https://lowendtalk.com/discussion/188857/a-rogue-dhcp-server-within-your-network-can-and-will-hijack-your-vpn-traffic
	https://news.ycombinator.com/item?id=40284111
	https://www.agwa.name/blog/post/hardening_openvpn_for_def_con
	https://www.theregister.com/2024/05/07/vpn_tunnelvision_dhcp/
	https://support.citrix.com/article/CTX677069/cloud-software-group-security-advisory-for-cve20243661
	https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00009
	https://bst.cisco.com/quickview/bug/CSCwk05814
	https://security.paloaltonetworks.com/CVE-2024-3661
	https://fortiguard.fortinet.com/psirt/FG-IR-24-170
	https://my.f5.com/manage/s/article/K000139553

Impacted products

	Vendor	Product	Version
	IETF	DHCP	Version: 0

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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