rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to an Out-Of-Bounds Write in function process_bitmap_updates() and results in a memory corruption and possibly even a remote code execution.
総合評価: CVE-2018-8794 は高リスク(73.9/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 8.30%、92 パーセンタイル) 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 直近 1 日で EPSS が +2.35% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
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 | 2026-05-30 | 5.96% | 8.30% | +2.35% |
| 2 | 2025-11-21 | 9.41% | 5.96% | -3.45% |
| 3 | 2025-11-18 | — | 9.41% | — |
EPSS の全履歴 (全 18 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 |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
critical | CVE-2018-8794: 1 source package rows (rdesktop); 11 state rows across 11 repos (3.10-main, 3.11-main, 3.12-main, 3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community, edge-main); fixed 11, open 0. | https://security.alpinelinux.org/vuln/CVE-2018-8794 |
debian
|
not yet assigned | CVE-2018-8794 not yet assigned priority: Debian including 1 source packages (rdesktop), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2018-8794 |
gentoo
|
normal | CVE-2018-8794: 1 GLSA(s) (201903-06), 1 atom(s) (net-misc/rdesktop); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-8794 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2018-8794 |
ubuntu
|
medium | CVE-2018-8794 medium priority: Ubuntu including 1 source packages (rdesktop), 19 status rows across 19 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 14, needed 2, DNE 1, ignored 1, released 1. | https://ubuntu.com/security/CVE-2018-8794 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| rdesktop | rdesktop | <= 1.8.3 | cpe:2.3:a:rdesktop:rdesktop:*:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| opensuse | leap | 15.1 | cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html | Mailing List Third Party Advisory |
| http://www.securityfocus.com/bid/106938 | Third Party Advisory VDB Entry |
| https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html | Mailing List Third Party Advisory |
| https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/ | Third Party Advisory |
| https://security.gentoo.org/glsa/201903-06 | Third Party Advisory |
| https://www.debian.org/security/2019/dsa-4394 | Third Party Advisory |