An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting parse_group_prop_ntr_selection_method in lib/ofp-util.c. When decoding a group mod, it validates the group type and command after the whole group mod has been decoded. The OF1.5 decoder, however, tries to use the type and command earlier, when it might still be invalid. This causes an assertion failure (via OVS_NOT_REACHED). ovs-vswitchd does not enable support for OpenFlow 1.5 by default.
総合評価: CVE-2018-17204 は中リスク(44.2/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 1.13%、78 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2025-11-21 | 1.31% | 1.13% | -0.19% |
| 2 | 2025-11-18 | 1.13% | 1.31% | +0.19% |
| 3 | 2025-08-20 | — | 1.13% | — |
EPSS の全履歴 (全 14 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 4.3 | 3.1 | MEDIUM |
|
2.8 | 1.4 | [email protected] |
| 4.0 | 2.0 | MEDIUM |
|
8.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2018-17204 not yet assigned priority: Debian including 1 source packages (openvswitch), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2018-17204 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2018-17204 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2018-17204/ |
ubuntu
|
medium | CVE-2018-17204 medium priority: Ubuntu including 1 source packages (openvswitch), 5 status rows across 5 suites (bionic, cosmic, trusty, upstream, xenial): released 2, DNE 1, needs-triage 1, not-affected 1. | https://ubuntu.com/security/CVE-2018-17204 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| openvswitch | openvswitch | >= 2.7.0, <= 2.7.6 | cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* |
| redhat | openstack | 10 | cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* |
| redhat | openstack | 13 | cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://access.redhat.com/errata/RHSA-2018:3500 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2019:0053 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2019:0081 | Third Party Advisory |
| https://github.com/openvswitch/ovs/commit/4af6da3b275b764b1afe194df6499b33d2bf4cde | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html | Mailing List Third Party Advisory |
| https://usn.ubuntu.com/3873-1/ | Third Party Advisory |