CVE-2016-4975 | mod_userdir CRLF injection

Possible CRLF injection allowing HTTP response splitting attacks for sites which use mod_userdir. This issue was mitigated by changes made in 2.4.25 and 2.2.32 which prohibit CR or LF injection into the "Location" or other outbound header key or value. Fixed in Apache HTTP Server 2.4.25 (Affected 2.4.1-2.4.23). Fixed in Apache HTTP Server 2.2.32 (Affected 2.2.0-2.2.31).

公開： 2018-08-14 最後更新： 2026-06-16 指派方： [email protected] 來源： [email protected]
NVD 狀態：Modified，CVE 狀態： published
檢視： NVD, CVE.org, EUVD

CVE-2016-4975 綜合評估為中等風險（53.4/100）：CVSS 技術影響為中級，利用機率偏高（EPSS 19.80%，百分位 97%） EPSS 顯示該漏洞近期被利用的可能性處於高位。 被利用機率偏高—請盤點暴露面並優先安排修補。

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。

CVE-2016-4975 的 EPSS（利用預測評分）

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 59.60% 19.80% -39.81%
2 2026-06-09 73.27% 59.60% -13.67%
3 2026-04-05 — 73.27% —

完整 EPSS 歷史 （共 48 筆）

CVE-2016-4975 的 CVSS 指標

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
6.1 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N 點擊展開
攻擊向量 (AV:N)
可經網際網路或企業內可路由網段從遠端觸達，攻擊者不必在裝置旁邊。
攻擊複雜度 (AC:L)
前置條件清楚，成功路徑穩定，不必仰賴罕見競態或極端環境。
權限需求 (PR:N)
不必事先登入或提權，匿名工作階段也可能成為跳板。
使用者互動 (UI:R)
需要一次明確的使用者動作（安裝、改設定、開啟惡意文件等）才會落地。
作用域 (S:C)
可從脆弱點橫向波及其他元件或更高權限域，爆炸半徑更大。
機密性影響 (C:L)
可能外洩部分欄位或樣本資料，但難以形成「整批拖走」的局面。
完整性影響 (I:L)
能改局部紀錄或設定，但尚不致讓整站／整庫資料整體不可信。
可用性影響 (A:N)
不至於造成業務意義上的長時間停擺或災難性效能崩塌。
 2.8 2.7 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N 點擊展開
存取路徑 (AV:N)
只要路由可達，即可從遠端發動利用。
存取複雜度 (AC:M)
需要若干有利條件，但不必「千年一遇」。
認證 (AU:N)
全程無需有效身分。
機密性影響 (C:N)
對機密性無影響。
完整性影響 (I:P)
完整性受到部分損害。
可用性影響 (A:N)
對可用性無影響。
 8.6 2.9 [email protected]

CVE-2016-4975 的弱點列舉

CVE-2016-4975 的 OS 追蹤

vendor priority summary link
debian low CVE-2016-4975 low priority: Debian including 1 source packages (apache2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2016-4975
redhat medium — https://access.redhat.com/security/cve/CVE-2016-4975
suse low CVE-2016-4975 severity low: SUSE including 26 source package names (apache2, apache2-2.4.16-20.19.1, …), 123 product×package rows across 26 product lines (SUSE Enterprise Storage 4, SUSE Linux Enterprise High Performance Computing 12 SP5, … (26 product lines)): Fixed 99, Known Not Affected 24. https://www.suse.com/security/cve/CVE-2016-4975/
ubuntu low CVE-2016-4975 low priority: Ubuntu including 1 source packages (apache2), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): not-affected 3, released 3. https://ubuntu.com/security/CVE-2016-4975

CVE-2016-4975 的影響軟體 / 設定

廠商 產品 版本 原始 CPE
apache http_server 2.2.0 cpe:2.3:a:apache:http_server:2.2.0:*:*:*:*:*:*:*
apache http_server 2.2.2 cpe:2.3:a:apache:http_server:2.2.2:*:*:*:*:*:*:*
apache http_server 2.2.3 cpe:2.3:a:apache:http_server:2.2.3:*:*:*:*:*:*:*
apache http_server 2.2.4 cpe:2.3:a:apache:http_server:2.2.4:*:*:*:*:*:*:*
apache http_server 2.2.6 cpe:2.3:a:apache:http_server:2.2.6:*:*:*:*:*:*:*
apache http_server 2.2.8 cpe:2.3:a:apache:http_server:2.2.8:*:*:*:*:*:*:*
apache http_server 2.2.9 cpe:2.3:a:apache:http_server:2.2.9:*:*:*:*:*:*:*
apache http_server 2.2.10 cpe:2.3:a:apache:http_server:2.2.10:*:*:*:*:*:*:*
apache http_server 2.2.11 cpe:2.3:a:apache:http_server:2.2.11:*:*:*:*:*:*:*
apache http_server 2.2.12 cpe:2.3:a:apache:http_server:2.2.12:*:*:*:*:*:*:*
apache http_server 2.2.13 cpe:2.3:a:apache:http_server:2.2.13:*:*:*:*:*:*:*
apache http_server 2.2.14 cpe:2.3:a:apache:http_server:2.2.14:*:*:*:*:*:*:*
apache http_server 2.2.15 cpe:2.3:a:apache:http_server:2.2.15:*:*:*:*:*:*:*
apache http_server 2.2.16 cpe:2.3:a:apache:http_server:2.2.16:*:*:*:*:*:*:*
apache http_server 2.2.17 cpe:2.3:a:apache:http_server:2.2.17:*:*:*:*:*:*:*
apache http_server 2.2.18 cpe:2.3:a:apache:http_server:2.2.18:*:*:*:*:*:*:*
apache http_server 2.2.19 cpe:2.3:a:apache:http_server:2.2.19:*:*:*:*:*:*:*
apache http_server 2.2.20 cpe:2.3:a:apache:http_server:2.2.20:*:*:*:*:*:*:*
apache http_server 2.2.21 cpe:2.3:a:apache:http_server:2.2.21:*:*:*:*:*:*:*
apache http_server 2.2.22 cpe:2.3:a:apache:http_server:2.2.22:*:*:*:*:*:*:*
apache http_server 2.2.23 cpe:2.3:a:apache:http_server:2.2.23:*:*:*:*:*:*:*
apache http_server 2.2.24 cpe:2.3:a:apache:http_server:2.2.24:*:*:*:*:*:*:*
apache http_server 2.2.25 cpe:2.3:a:apache:http_server:2.2.25:*:*:*:*:*:*:*
apache http_server 2.2.26 cpe:2.3:a:apache:http_server:2.2.26:*:*:*:*:*:*:*
apache http_server 2.2.27 cpe:2.3:a:apache:http_server:2.2.27:*:*:*:*:*:*:*
apache http_server 2.2.29 cpe:2.3:a:apache:http_server:2.2.29:*:*:*:*:*:*:*
apache http_server 2.2.31 cpe:2.3:a:apache:http_server:2.2.31:*:*:*:*:*:*:*
apache http_server 2.4.1 cpe:2.3:a:apache:http_server:2.4.1:*:*:*:*:*:*:*
apache http_server 2.4.2 cpe:2.3:a:apache:http_server:2.4.2:*:*:*:*:*:*:*
apache http_server 2.4.3 cpe:2.3:a:apache:http_server:2.4.3:*:*:*:*:*:*:*
apache http_server 2.4.4 cpe:2.3:a:apache:http_server:2.4.4:*:*:*:*:*:*:*
apache http_server 2.4.6 cpe:2.3:a:apache:http_server:2.4.6:*:*:*:*:*:*:*
apache http_server 2.4.7 cpe:2.3:a:apache:http_server:2.4.7:*:*:*:*:*:*:*
apache http_server 2.4.9 cpe:2.3:a:apache:http_server:2.4.9:*:*:*:*:*:*:*
apache http_server 2.4.10 cpe:2.3:a:apache:http_server:2.4.10:*:*:*:*:*:*:*
apache http_server 2.4.12 cpe:2.3:a:apache:http_server:2.4.12:*:*:*:*:*:*:*
apache http_server 2.4.16 cpe:2.3:a:apache:http_server:2.4.16:*:*:*:*:*:*:*
apache http_server 2.4.17 cpe:2.3:a:apache:http_server:2.4.17:*:*:*:*:*:*:*
apache http_server 2.4.18 cpe:2.3:a:apache:http_server:2.4.18:*:*:*:*:*:*:*
apache http_server 2.4.20 cpe:2.3:a:apache:http_server:2.4.20:*:*:*:*:*:*:*
apache http_server 2.4.23 cpe:2.3:a:apache:http_server:2.4.23:*:*:*:*:*:*:*

CVE-2016-4975 的參考連結

URL 標籤
http://www.securityfocus.com/bid/105093 Third Party Advisory VDB Entry
https://httpd.apache.org/security/vulnerabilities_22.html#CVE-2016-4975 Vendor Advisory
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2016-4975 Vendor Advisory
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7500997beb65d6f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rb14daf9cc4e28d18cdc15d6a6ca74e565672fabf7ad89541071d008b%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/re1e3a24664d35bcd0a0e793e0b5fc6ca6c107f99a1b2c545c5d4b467%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
https://security.netapp.com/advisory/ntap-20180926-0006/ Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03908en_us
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