CVE-2023-3966: Openvswsitch: ovs-vswitch fails to recover after malformed geneve metadata packet
First published: Wed Mar 15 2023(Updated: )
A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which may result in a denial of service and invalid memory accesses. Triggering this issue requires that hardware offloading via the netlink path is enabled.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ubuntu/openvswitch | <2.17.9<3.0.6<3.1.4<3.2.2 | 2.17.9 3.0.6 3.1.4 3.2.2 |
| ubuntu/openvswitch | <2.13.8-0ubuntu1.4 | 2.13.8-0ubuntu1.4 |
| ubuntu/openvswitch | <2.17.9-0ubuntu0.22.04.1 | 2.17.9-0ubuntu0.22.04.1 |
| ubuntu/openvswitch | <3.2.2-0ubuntu0.23.10.1 | 3.2.2-0ubuntu0.23.10.1 |
| redhat/openvswitch | <3.1.0 | 3.1.0 |
| debian/openvswitch | 2.10.7+ds1-0+deb10u1 2.10.7+ds1-0+deb10u5 2.15.0+ds1-2+deb11u5 3.1.0-2+deb12u1 3.3.0-1 |
Remedy
Disable flow hardware offload if enabled via the following setting and reboot: other_config:hw-offload=false
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Reference Links
- https://access.redhat.com/security/cve/CVE-2023-3966
- https://bugzilla.redhat.com/show_bug.cgi?id=2178363
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VYYUBF6OW2JG7VOFEOROHXGSJCTES3QO/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LFZADABUDOFI2KZIRQBYFZCIKH55RGY3/
- https://launchpad.net/bugs/cve/CVE-2023-3966
- https://www.openwall.com/lists/oss-security/2024/02/08/3
- https://github.com/openvswitch/ovs/commit/a468645c6d330943dbe0c8d466e05b9af2d7df0c
- https://github.com/openvswitch/ovs/commit/2cfbcd5247ed0fd941c1ebb9f4adb952b67fe13a
- https://github.com/openvswitch/ovs/commit/91e621bd5abab19954bec09c7d27c59acdf607b1
- https://github.com/openvswitch/ovs/commit/935cd1d574c6f432a451df8941374ffb36d767d9
- https://github.com/openvswitch/ovs/commit/b8657dada9641fbd2bd3a3f882e0862448d60910
- https://mail.openvswitch.org/pipermail/ovs-dev/2024-February/411702.html
- https://security-tracker.debian.org/tracker/CVE-2023-3966
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2264263
- https://access.redhat.com/errata/RHSA-2024:1234
- https://access.redhat.com/errata/RHSA-2024:1235
- https://access.redhat.com/errata/RHSA-2024:1227
- https://ubuntu.com/security/notices/USN-6690-1
- https://www.cve.org/CVERecord?id=CVE-2023-3966
- https://nvd.nist.gov/vuln/detail/CVE-2023-3966
- https://github.com/openvswitch/ovs/commit/be695f26fd5667bcc86d78954c4c783979088ead
- https://ubuntu.com/security/CVE-2023-3966
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