01 Record
CVE-2024-3661
DHCP routing options can manipulate interface-based VPN traffic
HighPUBLISHEDCNA: cisa-cg
CNA base score7.6 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
02 Description
DHCP routing options can manipulate interface-based VPN traffic
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 4.06% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 90.2% of scored records. A rank, not a probability.
- NVD base score
- 7.6 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2024-05-06 18:31Z2 YR AGO
- Last updated
- 2024-08-28 19:09Z2 YR AGO
- Reserved
- 2024-04-11
- Assigning CNA
- cisa-cg
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.6)
- CNA CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
- Weaknesses
- Data version
- 5.1
- Document digest
- e5fdd39d709543ba543901c8943a8ab2ec43f33e8809a55f2bd1757dbcbe7d8d
05 Affected products
VendorProductVersionsPlatforms
06 References
- datatracker.ietf.orghttps://datatracker.ietf.org/doc/html/rfc2131#section-7
- datatracker.ietf.orghttps://datatracker.ietf.org/doc/html/rfc3442#section-7
- tunnelvisionbug.comhttps://tunnelvisionbug.com/
- www.leviathansecurity.comhttps://www.leviathansecurity.com/research/tunnelvision
- news.ycombinator.comhttps://news.ycombinator.com/item?id=40279632
- arstechnica.comhttps://arstechnica.com/security/2024/05/novel-attack-against-virtually-all-vpn-apps-neuters-their-entire-purpose/
- krebsonsecurity.comhttps://krebsonsecurity.com/2024/05/why-your-vpn-may-not-be-as-secure-as-it-claims/
- issuetracker.google.comhttps://issuetracker.google.com/issues/263721377
- mullvad.nethttps://mullvad.net/en/blog/evaluating-the-impact-of-tunnelvision
- www.zscaler.comhttps://www.zscaler.com/blogs/security-research/cve-2024-3661-k-tunnelvision-exposes-vpn-bypass-vulnerability
- lowendtalk.comhttps://lowendtalk.com/discussion/188857/a-rogue-dhcp-server-within-your-network-can-and-will-hijack-your-vpn-traffic
- news.ycombinator.comhttps://news.ycombinator.com/item?id=40284111
- www.agwa.namehttps://www.agwa.name/blog/post/hardening_openvpn_for_def_con
- www.theregister.comhttps://www.theregister.com/2024/05/07/vpn_tunnelvision_dhcp/
- support.citrix.comhttps://support.citrix.com/article/CTX677069/cloud-software-group-security-advisory-for-cve20243661
- www.watchguard.comhttps://www.watchguard.com/wgrd-psirt/advisory/wgsa-2024-00009
- bst.cisco.comhttps://bst.cisco.com/quickview/bug/CSCwk05814
- security.paloaltonetworks.comhttps://security.paloaltonetworks.com/CVE-2024-3661
- fortiguard.fortinet.comhttps://fortiguard.fortinet.com/psirt/FG-IR-24-170
- my.f5.comhttps://my.f5.com/manage/s/article/K000139553
07 Fixed in
AlmaLinux 8
- NetworkManager Fixed in 1:1.40.16-18.el8_10
- NetworkManager-adsl Fixed in 1:1.40.16-18.el8_10
- NetworkManager-bluetooth Fixed in 1:1.40.16-18.el8_10
- NetworkManager-cloud-setup Fixed in 1:1.40.16-18.el8_10
- NetworkManager-config-connectivity-redhat Fixed in 1:1.40.16-18.el8_10
- NetworkManager-config-server Fixed in 1:1.40.16-18.el8_10
- NetworkManager-dispatcher-routing-rules Fixed in 1:1.40.16-18.el8_10
- NetworkManager-initscripts-updown Fixed in 1:1.40.16-18.el8_10
- NetworkManager-libnm Fixed in 1:1.40.16-18.el8_10
- NetworkManager-libnm-devel Fixed in 1:1.40.16-18.el8_10
- NetworkManager-ovs Fixed in 1:1.40.16-18.el8_10
- NetworkManager-ppp Fixed in 1:1.40.16-18.el8_10
- NetworkManager-team Fixed in 1:1.40.16-18.el8_10
- NetworkManager-tui Fixed in 1:1.40.16-18.el8_10
- NetworkManager-wifi Fixed in 1:1.40.16-18.el8_10
- NetworkManager-wwan Fixed in 1:1.40.16-18.el8_10
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- NetworkManager Fixed in 1:1.48.10-5.el9_5
- NetworkManager-adsl Fixed in 1:1.48.10-5.el9_5
- NetworkManager-bluetooth Fixed in 1:1.48.10-5.el9_5
- NetworkManager-cloud-setup Fixed in 1:1.48.10-5.el9_5
- NetworkManager-config-connectivity-redhat Fixed in 1:1.48.10-5.el9_5
- NetworkManager-config-server Fixed in 1:1.48.10-5.el9_5
- NetworkManager-dispatcher-routing-rules Fixed in 1:1.48.10-5.el9_5
- NetworkManager-initscripts-updown Fixed in 1:1.48.10-5.el9_5
- NetworkManager-libnm Fixed in 1:1.48.10-5.el9_5
- NetworkManager-libnm-devel Fixed in 1:1.48.10-5.el9_5
- NetworkManager-ovs Fixed in 1:1.48.10-5.el9_5
- NetworkManager-ppp Fixed in 1:1.48.10-5.el9_5
- NetworkManager-team Fixed in 1:1.48.10-5.el9_5
- NetworkManager-tui Fixed in 1:1.48.10-5.el9_5
- NetworkManager-wifi Fixed in 1:1.48.10-5.el9_5
- NetworkManager-wwan Fixed in 1:1.48.10-5.el9_5
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- NetworkManager Fixed in 1:1.40.16-18.el8_10
- NetworkManager-adsl Fixed in 1:1.40.16-18.el8_10
- NetworkManager-bluetooth Fixed in 1:1.40.16-18.el8_10
- NetworkManager-cloud-setup Fixed in 1:1.40.16-18.el8_10
- NetworkManager-config-connectivity-redhat Fixed in 1:1.40.16-18.el8_10
- NetworkManager-config-server Fixed in 1:1.40.16-18.el8_10
- NetworkManager-dispatcher-routing-rules Fixed in 1:1.40.16-18.el8_10
- NetworkManager-initscripts-updown Fixed in 1:1.40.16-18.el8_10
- NetworkManager-libnm Fixed in 1:1.40.16-18.el8_10
- NetworkManager-libnm-devel Fixed in 1:1.40.16-18.el8_10
- NetworkManager-ovs Fixed in 1:1.40.16-18.el8_10
- NetworkManager-ppp Fixed in 1:1.40.16-18.el8_10
- NetworkManager-team Fixed in 1:1.40.16-18.el8_10
- NetworkManager-tui Fixed in 1:1.40.16-18.el8_10
- NetworkManager-wifi Fixed in 1:1.40.16-18.el8_10
- NetworkManager-wwan Fixed in 1:1.40.16-18.el8_10
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- NetworkManager Fixed in 1:1.48.10-5.el9_5
- NetworkManager-adsl Fixed in 1:1.48.10-5.el9_5
- NetworkManager-bluetooth Fixed in 1:1.48.10-5.el9_5
- NetworkManager-cloud-setup Fixed in 1:1.48.10-5.el9_5
- NetworkManager-config-connectivity-redhat Fixed in 1:1.48.10-5.el9_5
- NetworkManager-config-server Fixed in 1:1.48.10-5.el9_5
- NetworkManager-dispatcher-routing-rules Fixed in 1:1.48.10-5.el9_5
- NetworkManager-initscripts-updown Fixed in 1:1.48.10-5.el9_5
- NetworkManager-libnm Fixed in 1:1.48.10-5.el9_5
- NetworkManager-libnm-devel Fixed in 1:1.48.10-5.el9_5
- NetworkManager-ovs Fixed in 1:1.48.10-5.el9_5
- NetworkManager-ppp Fixed in 1:1.48.10-5.el9_5
- NetworkManager-team Fixed in 1:1.48.10-5.el9_5
- NetworkManager-tui Fixed in 1:1.48.10-5.el9_5
- NetworkManager-wifi Fixed in 1:1.48.10-5.el9_5
- NetworkManager-wwan Fixed in 1:1.48.10-5.el9_5
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- pptpd No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- gadmin-openvpn-client No fix yet
- gadmin-openvpn-server No fix yet
- kvpnc No fix yet
- n2n No fix yet
- network-manager-iodine No fix yet
- network-manager-openconnect No fix yet
- network-manager-openvpn No fix yet
- network-manager-pptp No fix yet
- network-manager-strongswan No fix yet
- network-manager-vpnc No fix yet
- openconnect No fix yet
- pptp-linux No fix yet
- pptpd No fix yet
- sshuttle No fix yet
- tinc No fix yet
- vpnc No fix yet
- wireguard No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- gadmin-openvpn-client No fix yet
- gadmin-openvpn-server No fix yet
- kvpnc No fix yet
- libreswan No fix yet
- n2n No fix yet
- network-manager-fortisslvpn No fix yet
- network-manager-iodine No fix yet
- network-manager-l2tp No fix yet
- network-manager-openconnect No fix yet
- network-manager-openvpn No fix yet
- network-manager-pptp No fix yet
- network-manager-strongswan No fix yet
- network-manager-vpnc No fix yet
- openconnect No fix yet
- openfortivpn No fix yet
- pptp-linux No fix yet
- pptpd No fix yet
- quicktun No fix yet
- sshuttle No fix yet
- tinc No fix yet
- vpnc No fix yet
- wireguard No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- connman No fix yet
- gadmin-openvpn-client No fix yet
- gadmin-openvpn-server No fix yet
- golang-github-apparentlymart-go-openvpn-mgmt No fix yet
- libreswan No fix yet
- n2n No fix yet
- network-manager-fortisslvpn No fix yet
- network-manager-iodine No fix yet
- network-manager-l2tp No fix yet
- network-manager-openconnect No fix yet
- network-manager-openvpn No fix yet
- network-manager-pptp No fix yet
- network-manager-strongswan No fix yet
- network-manager-vpnc No fix yet
- openconnect No fix yet
- openfortivpn No fix yet
- openvpn No fix yet
- pptp-linux No fix yet
- pptpd No fix yet
- quicktun No fix yet
- sshuttle No fix yet
- tinc No fix yet
- vpnc No fix yet
- wireguard No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- connman No fix yet
- golang-github-apparentlymart-go-openvpn-mgmt No fix yet
- libreswan No fix yet
- mozillavpn No fix yet
- n2n No fix yet
- network-manager-fortisslvpn No fix yet
- network-manager-iodine No fix yet
- network-manager-l2tp No fix yet
- network-manager-openconnect No fix yet
- network-manager-openvpn No fix yet
- network-manager-pptp No fix yet
- network-manager-sstp No fix yet
- network-manager-strongswan No fix yet
- network-manager-vpnc No fix yet
- openconnect No fix yet
- openfortivpn No fix yet
- openvpn No fix yet
- pptp-linux No fix yet
- pptpd No fix yet
- quicktun No fix yet
- softether-vpn No fix yet
- sshuttle No fix yet
- tinc No fix yet
- vpnc No fix yet
- wireguard No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- connman No fix yet
- golang-github-apparentlymart-go-openvpn-mgmt No fix yet
- libreswan No fix yet
- n2n No fix yet
- network-manager-fortisslvpn No fix yet
- network-manager-iodine No fix yet
- network-manager-l2tp No fix yet
- network-manager-openconnect No fix yet
- network-manager-openvpn No fix yet
- network-manager-pptp No fix yet
- network-manager-sstp No fix yet
- network-manager-strongswan No fix yet
- network-manager-vpnc No fix yet
- openconnect No fix yet
- openfortivpn No fix yet
- openvpn No fix yet
- pptp-linux No fix yet
- quicktun No fix yet
- riseup-vpn No fix yet
- softether-vpn No fix yet
- sshuttle No fix yet
- tinc No fix yet
- vpnc No fix yet
- wireguard No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- openvpn No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- connman No fix yet
- openvpn No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- connman No fix yet
- openvpn No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.