tables/apr_hash.c in the Apache Portable Runtime (APR) library through 1.4.5 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.
結論預警: CVE-2012-0840 綜合評估為高可利用風險（72.7/100）：CVSS 技術影響為中級，利用機率偏高（EPSS 43.35%，百分位 99%） 核心證據: 已收錄 1 筆公開利用參考（Exploit-DB）。 近一日 EPSS 上升 +3.16%，被利用關注度持續升高。 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 |
|---|---|---|---|---|
| 36669 | exploit_db | edb | 2012-01-05 | 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 | 40.19% | 43.35% | +3.16% |
| 2 | 2026-05-30 | 37.18% | 40.19% | +3.00% |
| 3 | 2025-10-11 | — | 37.18% | — |
完整 EPSS 歷史 （共 17 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 |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
low | CVE-2012-0840 low priority: Debian including 1 source packages (apr), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2012-0840 |
gentoo
|
low | CVE-2012-0840: 1 GLSA(s) (201405-24), 2 atom(s) (dev-libs/apr, dev-libs/apr-util); latest impact low. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-0840 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2012-0840 |
ubuntu
|
low | CVE-2012-0840 low priority: Ubuntu including 1 source packages (apr), 13 status rows across 13 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid): not-affected 7, ignored 5, released 1. | https://ubuntu.com/security/CVE-2012-0840 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| apache | portable_runtime | <= 1.4.5 | cpe:2.3:a:apache:portable_runtime:*:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.1 | cpe:2.3:a:apache:portable_runtime:0.9.1:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.2 | cpe:2.3:a:apache:portable_runtime:0.9.2:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.2-dev | cpe:2.3:a:apache:portable_runtime:0.9.2-dev:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.3 | cpe:2.3:a:apache:portable_runtime:0.9.3:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.3-dev | cpe:2.3:a:apache:portable_runtime:0.9.3-dev:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.4 | cpe:2.3:a:apache:portable_runtime:0.9.4:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.5 | cpe:2.3:a:apache:portable_runtime:0.9.5:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.6 | cpe:2.3:a:apache:portable_runtime:0.9.6:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.7 | cpe:2.3:a:apache:portable_runtime:0.9.7:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.7-dev | cpe:2.3:a:apache:portable_runtime:0.9.7-dev:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.8 | cpe:2.3:a:apache:portable_runtime:0.9.8:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.9 | cpe:2.3:a:apache:portable_runtime:0.9.9:*:*:*:*:*:*:* |
| apache | portable_runtime | 0.9.16-dev | cpe:2.3:a:apache:portable_runtime:0.9.16-dev:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.0 | cpe:2.3:a:apache:portable_runtime:1.3.0:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.1 | cpe:2.3:a:apache:portable_runtime:1.3.1:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.2 | cpe:2.3:a:apache:portable_runtime:1.3.2:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.3 | cpe:2.3:a:apache:portable_runtime:1.3.3:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.4 | cpe:2.3:a:apache:portable_runtime:1.3.4:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.4-dev | cpe:2.3:a:apache:portable_runtime:1.3.4-dev:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.5 | cpe:2.3:a:apache:portable_runtime:1.3.5:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.6 | cpe:2.3:a:apache:portable_runtime:1.3.6:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.6-dev | cpe:2.3:a:apache:portable_runtime:1.3.6-dev:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.7 | cpe:2.3:a:apache:portable_runtime:1.3.7:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.8 | cpe:2.3:a:apache:portable_runtime:1.3.8:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.9 | cpe:2.3:a:apache:portable_runtime:1.3.9:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.10 | cpe:2.3:a:apache:portable_runtime:1.3.10:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.11 | cpe:2.3:a:apache:portable_runtime:1.3.11:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.12 | cpe:2.3:a:apache:portable_runtime:1.3.12:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.3.13 | cpe:2.3:a:apache:portable_runtime:1.3.13:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.4.0 | cpe:2.3:a:apache:portable_runtime:1.4.0:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.4.1 | cpe:2.3:a:apache:portable_runtime:1.4.1:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.4.2 | cpe:2.3:a:apache:portable_runtime:1.4.2:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.4.3 | cpe:2.3:a:apache:portable_runtime:1.4.3:*:*:*:*:*:*:* |
| apache | portable_runtime | 1.4.4 | cpe:2.3:a:apache:portable_runtime:1.4.4:*:*:*:*:*:*:* |