The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.
総合評価: CVE-2014-6053 は中リスク（47.8/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 7.56%、94 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。 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 | 2026-06-15 | 36.86% | 7.56% | -29.30% |
| 2 | 2025-07-13 | 40.51% | 36.86% | -3.65% |
| 3 | 2025-04-08 | — | 40.51% | — |
EPSS の全履歴 （全 13 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 |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2014-6053 not yet assigned priority: Debian including 3 source packages (libvncserver, tightvnc, vino), 12 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 12. | https://security-tracker.debian.org/tracker/CVE-2014-6053 |
gentoo
|
normal | CVE-2014-6053: 1 GLSA(s) (201507-07), 1 atom(s) (net-libs/libvncserver); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-6053 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2014-6053 |
ubuntu
|
medium | CVE-2014-6053 medium priority: Ubuntu including 5 source packages (italc, krfb, libvncserver, tightvnc, vino), 84 status rows across 18 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lucid, lunar, mantic, noble, oracular, plucky, precise, questing, trusty, upstream, xenial): not-affected 29, released 20, DNE 16, needs-triage 10, ignored 9. | https://ubuntu.com/security/CVE-2014-6053 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| libvncserver | libvncserver | <= 0.9.9 | cpe:2.3:a:libvncserver:libvncserver:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| debian | debian_linux | 7.0 | cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html | |
| http://seclists.org/oss-sec/2014/q3/639 | Mailing List Third Party Advisory |
| http://secunia.com/advisories/61506 | |
| http://secunia.com/advisories/61682 | |
| http://ubuntu.com/usn/usn-2365-1 | Third Party Advisory |
| http://www.debian.org/security/2014/dsa-3081 | Third Party Advisory |
| http://www.ocert.org/advisories/ocert-2014-007.html | Third Party Advisory US Government Resource |
| http://www.openwall.com/lists/oss-security/2014/09/25/11 | Mailing List Third Party Advisory |
| https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28 | Issue Tracking Patch |
| https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html | |
| https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html | |
| https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html | |
| https://security.gentoo.org/glsa/201507-07 | |
| https://usn.ubuntu.com/4573-1/ | |
| https://usn.ubuntu.com/4587-1/ |