جزئیات آسیبپذیری
CVE-2026-26965
FreeRDP has Out-of-bounds Write
شرح رسمی (انگلیسی)
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, in the RLE planar decode path, `planar_decompress_plane_rle()` writes into `pDstData` at `((nYDst+y) * nDstStep) + (4*nXDst) + nChannel` without verifying that `(nYDst+nSrcHeight)` fits in the destination height or that `(nXDst+nSrcWidth)` fits in the destination stride. When `TempFormat != DstFormat`, `pDstData` becomes `planar->pTempData` (sized for the desktop), while `nYDst` is only validated against the **surface** by `is_within_surface()`. A malicious RDP server can exploit this to perform a heap out-of-bounds write with attacker-controlled offset and pixel data on any connecting FreeRDP client. The OOB write reaches up to 132,096 bytes past the temp buffer end, and on the brk heap (desktop ≤ 128×128), an adjacent `NSC_CONTEXT` struct's `decode` function pointer is overwritten with attacker-controlled pixel data — control-flow–relevant corruption (function pointer overwritten) demonstrated under deterministic heap layout (`nsc->decode = 0xFF414141FF414141`). Version 3.23.0 fixes the vulnerability.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 8.8بالا | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 8.8بالا | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
محصولات آسیبپذیر
| فروشنده | محصول | نسخهها | منبع |
|---|---|---|---|
| FreeRDP | FreeRDP | < 3.23.0 | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۱۹- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5vgf-mw4f-r33h x_refsource_CONFIRM
- https://github.com/FreeRDP/FreeRDP/commit/a0be5cb87d760bb1c803ad1bb835aa1e73e62abc x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2026-26965 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2442959 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26965.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:7292 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:5936 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:5939 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:19033 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6005 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6712 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6616 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6665 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6764 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6395 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6396 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6384 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6385 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:6004 vendor-advisoryx_refsource_REDHAT
اطلاعات
- تاریخ انتشار
- ۱۴۰۴/۱۲/۰۷
- آخرین بهروزرسانی
- ۱۴۰۵/۰۴/۲۴
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- GitHub_M
پیشبینی بهرهبرداری (EPSS)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- خیر
- وضعیت بهرهبرداری
- اثبات مفهوم
- اثر فنی
- کامل
ضعفها (CWE)
- CWE-787Out-of-bounds Write