جزئیات آسیب‌پذیری
CVE-2026-9256
NGINX ngx_http_rewrite_module vulnerability
شرح رسمی (انگلیسی)
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when a rewrite directive uses a regex pattern with distinct, overlapping Perl-Compatible Regular Expression (PCRE) captures (for example, ^/((.*))$) and a replacement string that references multiple such captures (for example, $1$2) in a redirect or arguments context. An unauthenticated attacker along with conditions beyond their control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 9.2بحرانی | 4.0 | CVEProject cvelistV5 (CNA) (f5) | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 8.1بالا | 3.1 | CVEProject cvelistV5 (CNA) (f5) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 8.1بالا | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
محصولات آسیب‌پذیر
| فروشنده | محصول | نسخه‌ها | منبع |
|---|---|---|---|
| F5 | NGINX Open Source | 0.1.17 ≤ v ≤ 0.9.7 | CVEProject cvelistV5 (CNA) |
| F5 | NGINX Open Source | 1.30.0 ≤ v < 1.30.2 | CVEProject cvelistV5 (CNA) |
| F5 | NGINX Open Source | 1.31.0 ≤ v < 1.31.1 | CVEProject cvelistV5 (CNA) |
| F5 | NGINX Plus | 37.0 ≤ v < 37.0.1.1 | CVEProject cvelistV5 (CNA) |
| F5 | NGINX Plus | R32 ≤ v < R32 P7 | CVEProject cvelistV5 (CNA) |
| F5 | NGINX Plus | R36 ≤ v < R36 P5 | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Lightspeed proxy 1 | همه | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۱۵- https://my.f5.com/manage/s/article/K000161377 vendor-advisory
- http://www.openwall.com/lists/oss-security/2026/05/22/14
- https://lists.debian.org/debian-lts-announce/2026/06/msg00023.html
- https://access.redhat.com/security/cve/CVE-2026-9256 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2480746 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9256.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:29874 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:28921 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:28212 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:28973 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:29151 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:33313 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:20351 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:44481 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:58981 vendor-advisoryx_refsource_REDHAT
اطلاعات
- تاریخ انتشار
- ۱۴۰۵/۰۳/۰۱
- آخرین به‌روزرسانی
- ۱۴۰۵/۰۶/۰۳
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- f5
پیش‌بینی بهره‌برداری (EPSS)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- خیر
- وضعیت بهره‌برداری
- ندارد
- اثر فنی
- کامل
ضعف‌ها (CWE)
- CWE-122Heap-based Buffer Overflow