The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.
結論預警: CVE-2017-17484 綜合評估為高可利用風險（86/100）：CVSS 技術影響為嚴重級，利用機率偏高（EPSS 4.61%，百分位 90%） 核心證據: 已收錄 1 筆公開利用參考（Exploit-DB）。 強制指令: 存在公開利用—請盤點暴露面、落實緩解措施並優先修補。
風險隨態勢動態變化；本站持續評估並同步更新本頁展示內容。
| EDB-ID | 來源 | 類型 | 公開時間 | 連結 |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS 日更估計相對被利用可能性；百分位表示該 CVE 在已評分漏洞中的相對排名（越高表示相對更嚴重）。
| # | 日期 | 舊 EPSS 分數 | 新 EPSS 分數 | 變化（新 − 舊） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 4.47% | 4.61% | +0.13% |
| 2 | 2026-03-28 | 2.20% | 4.47% | +2.27% |
| 3 | 2025-12-28 | — | 2.20% | — |
完整 EPSS 歷史 （共 16 筆）
該 CVE 的 CVSS 指標。
| 底座分 | 版本 | 嚴重度 | 向量 | 可利用性 | 影響 | 分數來源 |
|---|---|---|---|---|---|---|
| 9.8 | 3.0 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2017-17484 unimportant priority: Debian including 1 source packages (icu), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2017-17484 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2017-17484 |
suse
|
medium | CVE-2017-17484 severity moderate: SUSE including 13 source package names (icu-4.0-47.6.1, icu-52.1-8.7.1, …), 140 product×package rows across 50 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-Basic-On-Demand, … (50 product lines)): Fixed 140. | https://www.suse.com/security/cve/CVE-2017-17484/ |
ubuntu
|
medium | CVE-2017-17484 medium priority: Ubuntu including 1 source packages (icu), 5 status rows across 5 suites (artful, trusty, upstream, xenial, zesty): not-affected 4, needs-triage 1. | https://ubuntu.com/security/CVE-2017-17484 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| icu-project | international_components_for_unicode | <= 60.1 | cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:* |
| URL | 標籤 |
|---|---|
| https://github.com/znc/znc/issues/1459 | Issue Tracking Third Party Advisory |
| https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp | Exploit Vendor Advisory |
| https://ssl.icu-project.org/trac/changeset/40714 | Issue Tracking Patch Vendor Advisory |
| https://ssl.icu-project.org/trac/changeset/40715 | Issue Tracking Vendor Advisory |
| https://ssl.icu-project.org/trac/ticket/13490 | Issue Tracking Vendor Advisory |
| https://ssl.icu-project.org/trac/ticket/13510 | Issue Tracking Vendor Advisory |
| https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html |