CVE-2017-9798

Exp

Apache httpd allows remote attackers to read secret data from process memory if the Limit directive can be set in a user's .htaccess file, or if httpd.conf has certain misconfigurations, aka Optionsbleed. This affects the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The attacker sends an unauthenticated OPTIONS HTTP request when attempting to read secret data. This is a use-after-free issue and thus secret data is not always sent, and the specific data depends on many factors including configuration. Exploitation with .htaccess can be blocked with a patch to the ap_limit_section function in server/core.c.

公開： 2017-09-18 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-2017-9798 綜合評估為高可利用風險（81.1/100）：CVSS 技術影響為高級，利用機率偏高（EPSS 95.00%，百分位 100%） 已收錄 5 筆公開利用參考（Exploit-DB）。 近一日 EPSS 上升 +1.16%，被利用關注度持續升高。 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。

CVE-2017-9798 的公開 exploit 引用（Exploit-DB）

EDB-ID 來源 類型 公開時間 連結
42745 exploit_db edb 2017-09-18 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

CVE-2017-9798 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 93.84% 95.00% +1.16%
2 2025-12-28 93.70% 93.84% +0.14%
3 2025-12-27 — 93.70% —

完整 EPSS 歷史 （共 22 筆）

CVE-2017-9798 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
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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:N)
不必受害者點連結、放行巨集或安裝軟體，攻擊鏈可自動走完。
作用域 (S:U)
破壞局限在脆弱元件原本的安全權限與信任域之內。
機密性影響 (C:H)
大量讀取、匯出或長期潛伏竊取機敏資料，在實務上成立。
完整性影響 (I:N)
對紀錄真實性與不可否認性的破壞可忽略。
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。
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/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:L)
步驟短、路徑清楚，重現成本低。
認證 (AU:N)
全程無需有效身分。
機密性影響 (C:P)
機密性受到部分損害。
完整性影響 (I:N)
對完整性無影響。
可用性影響 (A:N)
對可用性無影響。
 10.0 2.9 [email protected]

CVE-2017-9798 的弱點列舉

CVE-2017-9798 的 OS 追蹤

vendor priority summary link
alpine — CVE-2017-9798: 1 source package rows (apache2); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. https://security.alpinelinux.org/vuln/CVE-2017-9798
debian not yet assigned CVE-2017-9798 not yet assigned 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-2017-9798
gentoo normal CVE-2017-9798: 1 GLSA(s) (201710-32), 1 atom(s) (www-servers/apache); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-9798
redhat medium — https://access.redhat.com/security/cve/CVE-2017-9798
suse medium CVE-2017-9798 severity moderate: SUSE including 345 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 485 product×package rows across 58 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (58 product lines)): Known Affected 231, Fixed 206, Known Not Affected 48. https://www.suse.com/security/cve/CVE-2017-9798/
ubuntu medium CVE-2017-9798 medium priority: Ubuntu including 1 source packages (apache2), 5 status rows across 5 suites (artful, trusty, upstream, xenial, zesty): released 4, needs-triage 1. https://ubuntu.com/security/CVE-2017-9798

CVE-2017-9798 的影響軟體 / 設定

廠商 產品 版本 原始 CPE
apache http_server <= 2.2.34 cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
apache http_server 2.4.0 cpe:2.3:a:apache:http_server:2.4.0:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
apache http_server 2.4.25 cpe:2.3:a:apache:http_server:2.4.25:*:*:*:*:*:*:*
apache http_server 2.4.26 cpe:2.3:a:apache:http_server:2.4.26:*:*:*:*:*:*:*
apache http_server 2.4.27 cpe:2.3:a:apache:http_server:2.4.27:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVE-2017-9798 的參考連結

URL 標籤
http://openwall.com/lists/oss-security/2017/09/18/2 Mailing List VDB Entry
http://www.debian.org/security/2017/dsa-3980 Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html Patch Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html Patch Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html Patch Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html Patch Third Party Advisory
http://www.securityfocus.com/bid/100872 Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/105598 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039387 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:2882 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2972 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3018 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3113 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3114 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3193 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3194 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3195 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3239 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3240 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3475 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3476 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3477 Third Party Advisory
https://blog.fuzzing-project.org/60-Optionsbleed-HTTP-OPTIONS-method-can-leak-Apaches-server-memory.html Exploit Patch Technical Description Third Party Advisory
https://blog.fuzzing-project.org/uploads/apache-2.2-optionsbleed-backport.patch Exploit Patch Technical Description Third Party Advisory
https://github.com/apache/httpd/commit/4cc27823899e070268b906ca677ee838d07cf67a Patch Vendor Advisory
https://github.com/hannob/optionsbleed Exploit Third Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2017-9798 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/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%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/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%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/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/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%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://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3E
https://security-tracker.debian.org/tracker/CVE-2017-9798 Third Party Advisory
https://security.gentoo.org/glsa/201710-32 Third Party Advisory
https://security.netapp.com/advisory/ntap-20180601-0003/ Third Party Advisory
https://support.apple.com/HT208331 Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us Third Party Advisory
https://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/server/core.c?r1=1805223&r2=1807754&pathrev=1807754&view=patch Vendor Advisory
https://www.exploit-db.com/exploits/42745/ Exploit Third Party Advisory VDB Entry
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html Patch Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html Patch Third Party Advisory
https://www.tenable.com/security/tns-2019-09 Third Party Advisory
http://seclists.org/fulldisclosure/2024/Sep/22
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