JRuby before 1.6.5.1 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-2011-4838 綜合評估為中等風險(48.6/100):CVSS 技術影響為中級,利用機率(EPSS 4.36%) 強制指令: 梳理受影響資產並納入修補計畫。
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。
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 | 7.27% | 4.36% | -2.91% |
| 2 | 2025-03-30 | 13.31% | 7.27% | -6.03% |
| 3 | 2025-03-29 | — | 13.31% | — |
完整 EPSS 歷史 (共 6 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-2011-4838 low priority: Debian including 1 source packages (jruby), 4 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 4. | https://security-tracker.debian.org/tracker/CVE-2011-4838 |
gentoo
|
normal | CVE-2011-4838: 1 GLSA(s) (201207-06), 1 atom(s) (dev-java/jruby); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-4838 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2011-4838 |
ubuntu
|
medium | CVE-2011-4838 medium priority: Ubuntu including 1 source packages (jruby), 17 status rows across 17 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 10, ignored 5, DNE 1, released 1. | https://ubuntu.com/security/CVE-2011-4838 |
| URL | 標籤 |
|---|---|
| http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html | Broken Link |
| http://jruby.org/2011/12/27/jruby-1-6-5-1.html | Vendor Advisory |
| http://rhn.redhat.com/errata/RHSA-2012-1232.html | Broken Link |
| http://secunia.com/advisories/47407 | Third Party Advisory |
| http://secunia.com/advisories/50084 | Third Party Advisory |
| http://security.gentoo.org/glsa/glsa-201207-06.xml | Third Party Advisory |
| http://www.kb.cert.org/vuls/id/903934 | Third Party Advisory US Government Resource |
| http://www.nruns.com/_downloads/advisory28122011.pdf | Third Party Advisory |
| http://www.ocert.org/advisories/ocert-2011-003.html | Third Party Advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/72019 | Third Party Advisory VDB Entry |