telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a "telnet/tcp server failing (looping), service terminated" error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.
総合評価: CVE-2022-39028 は悪用リスクが高い(66/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.40%、60 パーセンタイル) 根拠: 公開エクスプロイトが 1 件参照されています(Exploit-DB)。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 2026-02-25 | 0.47% | 0.40% | -0.07% |
| 2 | 2026-02-06 | 0.39% | 0.47% | +0.09% |
| 3 | 2025-11-21 | — | 0.39% | — |
EPSS の全履歴 (全 16 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2022-39028 not yet assigned priority: Debian including 1 source packages (inetutils), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2022-39028 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2022-39028 |
suse
|
high | CVE-2022-39028 severity important: SUSE including 257 source package names (5.0.0-beta1.2.122:telnet-1.2-150000.3.6.1, 5.1.0.6.40:telnet-1.2-150000.3.6.1, …), 743 product×package rows across 276 product lines (Container suse/manager/5.0/x86_64/server, Container suse/multi-linux-manager/5.1/x86_64/server, … (276 product lines)): Fixed 315, Known Affected 231, Known Not Affected 197. | https://www.suse.com/security/cve/CVE-2022-39028/ |
ubuntu
|
medium | CVE-2022-39028 medium priority: Ubuntu including 1 source packages (inetutils), 12 status rows across 12 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial): not-affected 6, released 6. | https://ubuntu.com/security/CVE-2022-39028 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| gnu | inetutils | <= 2.3 | cpe:2.3:a:gnu:inetutils:*:*:*:*:*:*:*:* |
| mit | kerberos_5 | <= 1.0.3 | cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* |
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| netkit-telnet_project | netkit-telnet | <= 0.17 | cpe:2.3:a:netkit-telnet_project:netkit-telnet:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=113da8021710d871c7dd72d2a4d5615d42d64289 | Mailing List Patch Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2022/11/msg00033.html | Mailing List Third Party Advisory |
| https://lists.gnu.org/archive/html/bug-inetutils/2022-08/msg00002.html | Mailing List Vendor Advisory |
| https://pierrekim.github.io/blog/2022-08-24-2-byte-dos-freebsd-netbsd-telnetd-netkit-telnetd-inetutils-telnetd-kerberos-telnetd.html | Exploit Patch Third Party Advisory |