crítica
CVE-2026-64620
FreeRDP: FreeRDP: Remote code execution or denial of service via heap-based buffer overflow
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.
Severidad por fuente
NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Red Hat8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
La etiqueta propia de Trivy es CRITICAL. Crítica según NVD. Más baja según Red Hat (alta), AlmaLinux (alta), Amazon (alta), Oracle (alta), Rocky Linux (alta), Ubuntu (media).
Descripción
FreeRDP before 3.28.0 (affected <=3.27.1) contains a heap-based buffer overflow in crypto_rsa_common() (libfreerdp/crypto/crypto.c). The function writes the modular-exponentiation result into the caller's output buffer via BN_bn2bin() and only afterward checks output_length > out_length, so out-of-bounds bytes are written before the bounds check. On the server side, when a client selects RDP Standard Security, the encrypted client random is decrypted into a fixed 32-byte buffer. Because the server publishes its RSA public key, an unauthenticated attacker can forge a ciphertext whose decrypted value is up to the full modulus length (e.g. 256 bytes for RSA-2048), overflowing the 32-byte heap buffer by up to ~224 attacker-controlled bytes pre-authentication, resulting in denial of service.
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| alma 10 | freerdp, freerdp-devel, freerdp-libs y 3 más | 2:3.10.3-12.el10_2.8 |
| amazon linux 2023 | freerdp, freerdp-debuginfo, freerdp-debugsource y 8 más | 2:3.6.3-1.amzn2023.0.14 |
| debian 11 | freerdp2 | sin corrección indicada |
| debian 12 | freerdp2 | sin corrección indicada |
| debian 13 | freerdp3 | sin corrección indicada |
| debian 14 | freerdp3 | 3.28.0+dfsg-1 |
| echo | freerdp2, freerdp3 | sin corrección indicada |
| rapidfort alma 10 | freerdp, freerdp-devel, freerdp-libs y 3 más | 2:3.10.3-12.el10_2.8 |
| rapidfort alpine 3.20 | freerdp | 3.29.0-r0 |
| rapidfort alpine 3.21 | freerdp | 3.29.0-r0 |
| rapidfort alpine 3.22 | freerdp | 3.29.0-r0 |
| rapidfort alpine 3.23 | freerdp | 3.29.0-r0 |
Mostrar las 65 entradas de 22 fuentes
| Fuente | Paquete | Corregido en |
|---|---|---|
| alma 10 | freerdp | 2:3.10.3-12.el10_2.8 |
| alma 10 | freerdp-devel | 2:3.10.3-12.el10_2.8 |
| alma 10 | freerdp-libs | 2:3.10.3-12.el10_2.8 |
| alma 10 | freerdp-server | 2:3.10.3-12.el10_2.8 |
| alma 10 | libwinpr | 2:3.10.3-12.el10_2.8 |
| alma 10 | libwinpr-devel | 2:3.10.3-12.el10_2.8 |
| amazon linux 2023 | freerdp | 2:3.6.3-1.amzn2023.0.14 |
| amazon linux 2023 | freerdp-debuginfo | 2:3.6.3-1.amzn2023.0.14 |
| amazon linux 2023 | freerdp-debugsource | 2:3.6.3-1.amzn2023.0.14 |
| amazon linux 2023 | freerdp-devel | 2:3.6.3-1.amzn2023.0.14 |
| amazon linux 2023 | freerdp-libs | 2:3.6.3-1.amzn2023.0.14 |
| amazon linux 2023 | freerdp-libs-debuginfo | 2:3.6.3-1.amzn2023.0.14 |
| amazon linux 2023 | freerdp-server | 2:3.6.3-1.amzn2023.0.14 |
| amazon linux 2023 | freerdp-server-debuginfo | 2:3.6.3-1.amzn2023.0.14 |
| amazon linux 2023 | libwinpr | 2:3.6.3-1.amzn2023.0.14 |
| amazon linux 2023 | libwinpr-debuginfo | 2:3.6.3-1.amzn2023.0.14 |
| amazon linux 2023 | libwinpr-devel | 2:3.6.3-1.amzn2023.0.14 |
| debian 11 | freerdp2 | sin corrección indicada |
| debian 12 | freerdp2 | sin corrección indicada |
| debian 13 | freerdp3 | sin corrección indicada |
| debian 14 | freerdp3 | 3.28.0+dfsg-1 |
| echo | freerdp2 | sin corrección indicada |
| echo | freerdp3 | sin corrección indicada |
| rapidfort alma 10 | freerdp | 2:3.10.3-12.el10_2.8 |
| rapidfort alma 10 | freerdp-devel | 2:3.10.3-12.el10_2.8 |
| rapidfort alma 10 | freerdp-libs | 2:3.10.3-12.el10_2.8 |
| rapidfort alma 10 | freerdp-server | 2:3.10.3-12.el10_2.8 |
| rapidfort alma 10 | libwinpr | 2:3.10.3-12.el10_2.8 |
| rapidfort alma 10 | libwinpr-devel | 2:3.10.3-12.el10_2.8 |
| rapidfort alpine 3.20 | freerdp | 3.29.0-r0 |
| rapidfort alpine 3.21 | freerdp | 3.29.0-r0 |
| rapidfort alpine 3.22 | freerdp | 3.29.0-r0 |
| rapidfort alpine 3.23 | freerdp | 3.29.0-r0 |
| rapidfort alpine 3.24 | freerdp | 3.29.0-r0 |
| rapidfort amazon linux 2023 | freerdp | 2:3.6.3-1.amzn2023.0.14 |
| rapidfort amazon linux 2023 | freerdp-devel | 2:3.6.3-1.amzn2023.0.14 |
| rapidfort amazon linux 2023 | freerdp-libs | 2:3.6.3-1.amzn2023.0.14 |
| rapidfort amazon linux 2023 | freerdp-server | 2:3.6.3-1.amzn2023.0.14 |
| rapidfort amazon linux 2023 | libwinpr | 2:3.6.3-1.amzn2023.0.14 |
| rapidfort amazon linux 2023 | libwinpr-devel | 2:3.6.3-1.amzn2023.0.14 |
| rapidfort debian 12 | freerdp2 | sin corrección indicada |
| rapidfort debian 12 | freerdp3 | 0:3.28.0+dfsg-1 |
| rapidfort debian 13 | freerdp2 | sin corrección indicada |
| rapidfort debian 13 | freerdp3 | 0:3.28.0+dfsg-1 |
| rapidfort fedora 43 | freerdp | 2:3.28.0-1.fc43 |
| rapidfort fedora 43 | freerdp-devel | 2:3.28.0-1.fc43 |
| rapidfort fedora 43 | freerdp-libs | 2:3.28.0-1.fc43 |
| rapidfort fedora 43 | freerdp-server | 2:3.28.0-1.fc43 |
| rapidfort fedora 43 | libwinpr | 2:3.28.0-1.fc43 |
| rapidfort fedora 43 | libwinpr-devel | 2:3.28.0-1.fc43 |
| rapidfort Oracle Linux 10 | freerdp | 2:3.10.3-12.el10_2.8 |
| rapidfort Oracle Linux 10 | freerdp-devel | 2:3.10.3-12.el10_2.8 |
| rapidfort Oracle Linux 10 | freerdp-libs | 2:3.10.3-12.el10_2.8 |
| rapidfort Oracle Linux 10 | freerdp-server | 2:3.10.3-12.el10_2.8 |
| rapidfort Oracle Linux 10 | libwinpr | 2:3.10.3-12.el10_2.8 |
| rapidfort Oracle Linux 10 | libwinpr-devel | 2:3.10.3-12.el10_2.8 |
| Red Hat | freerdp | sin corrección indicada |
| Red Hat | freerdp-devel | sin corrección indicada |
| Red Hat | freerdp-libs | sin corrección indicada |
| Red Hat | freerdp-plugins | sin corrección indicada |
| rocky 10 | freerdp | 0.0.0 |
| rocky 10 | freerdp-libs | 0.0.0 |
| rocky 10 | libwinpr | 0.0.0 |
| ubuntu 24.04 | freerdp3 | 3.30.0+dfsg-0ubuntu0.24.04.1 |
| ubuntu 26.04 | freerdp3 | 3.30.0+dfsg-0ubuntu0.26.04.1 |
Referencias
- https://access.redhat.com/errata/RHSA-2026:54486
- https://access.redhat.com/security/cve/CVE-2026-64620
- https://bugzilla.redhat.com/2502752
- https://bugzilla.redhat.com/2502766
- https://bugzilla.redhat.com/2503096
- https://bugzilla.redhat.com/2509985
- https://bugzilla.redhat.com/2510004
- https://bugzilla.redhat.com/2510125
Las 31 referencias
- https://bugzilla.redhat.com/show_bug.cgi?id=2502752
- https://bugzilla.redhat.com/show_bug.cgi?id=2502766
- https://bugzilla.redhat.com/show_bug.cgi?id=2503096
- https://bugzilla.redhat.com/show_bug.cgi?id=2509985
- https://bugzilla.redhat.com/show_bug.cgi?id=2510004
- https://bugzilla.redhat.com/show_bug.cgi?id=2510125
- https://creativecommons.org/licenses/by/4.0/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-64620
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-64621
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-64624
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-67289
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-67299
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-68580
- https://errata.almalinux.org/10/ALSA-2026-54486.html
- https://errata.rockylinux.org/RLSA-2026:54486
- https://github.com/FreeRDP/FreeRDP/commit/1f7a716d39b5605bb8a83b0c3c97a6ce386609ef
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pjqx-v446-x7fc
- https://linux.oracle.com/cve/CVE-2026-64620.html
- https://linux.oracle.com/errata/ELSA-2026-54486.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-64620
- https://ubuntu.com/security/notices/USN-8410-1
- https://www.cve.org/CVERecord?id=CVE-2026-64620
- https://www.vulncheck.com/advisories/freerdp-before-heap-buffer-overflow-via-crypto-rsa-common