Unrated severityNVD Advisory· Published May 6, 2024· Updated Aug 28, 2024
DHCP routing options can manipulate interface-based VPN traffic
CVE-2024-3661
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
17- osv-coords16 versionspkg:rpm/almalinux/NetworkManagerpkg:rpm/almalinux/NetworkManager-adslpkg:rpm/almalinux/NetworkManager-bluetoothpkg:rpm/almalinux/NetworkManager-cloud-setuppkg:rpm/almalinux/NetworkManager-config-connectivity-redhatpkg:rpm/almalinux/NetworkManager-config-serverpkg:rpm/almalinux/NetworkManager-dispatcher-routing-rulespkg:rpm/almalinux/NetworkManager-initscripts-updownpkg:rpm/almalinux/NetworkManager-libnmpkg:rpm/almalinux/NetworkManager-libnm-develpkg:rpm/almalinux/NetworkManager-ovspkg:rpm/almalinux/NetworkManager-ppppkg:rpm/almalinux/NetworkManager-teampkg:rpm/almalinux/NetworkManager-tuipkg:rpm/almalinux/NetworkManager-wifipkg:rpm/almalinux/NetworkManager-wwan
< 1:1.40.16-18.el8_10+ 15 more
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- (no CPE)range: < 1:1.40.16-18.el8_10
- IETF/DHCPv5Range: 0
Patches
Vulnerability mechanics
References
20- arstechnica.com/security/2024/05/novel-attack-against-virtually-all-vpn-apps-neuters-their-entire-purpose/mitre
- bst.cisco.com/quickview/bug/CSCwk05814mitre
- datatracker.ietf.org/doc/html/rfc2131mitre
- datatracker.ietf.org/doc/html/rfc3442mitre
- fortiguard.fortinet.com/psirt/FG-IR-24-170mitre
- issuetracker.google.com/issues/263721377mitre
- krebsonsecurity.com/2024/05/why-your-vpn-may-not-be-as-secure-as-it-claims/mitre
- lowendtalk.com/discussion/188857/a-rogue-dhcp-server-within-your-network-can-and-will-hijack-your-vpn-trafficmitre
- mullvad.net/en/blog/evaluating-the-impact-of-tunnelvisionmitre
- my.f5.com/manage/s/article/K000139553mitre
- news.ycombinator.com/itemmitre
- news.ycombinator.com/itemmitre
- security.paloaltonetworks.com/CVE-2024-3661mitre
- support.citrix.com/article/CTX677069/cloud-software-group-security-advisory-for-cve20243661mitre
- tunnelvisionbug.commitre
- www.agwa.name/blog/post/hardening_openvpn_for_def_conmitre
- www.leviathansecurity.com/research/tunnelvisionmitre
- www.theregister.com/2024/05/07/vpn_tunnelvision_dhcp/mitre
- www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00009mitre
- www.zscaler.com/blogs/security-research/cve-2024-3661-k-tunnelvision-exposes-vpn-bypass-vulnerabilitymitre
News mentions
0No linked articles in our index yet.