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Details of issue NIXPKGS-2026-0370

NIXPKGS-2026-0370
published on 27 Feb 2026
Permalink CVE-2026-27015
updated 1 month ago by @LeSuisse Activity log
  • Created automatic suggestion 1 month ago
  • @LeSuisse accepted 1 month ago
  • @LeSuisse published on GitHub 1 month ago
FreeRDP: Smartcard NDR Alignment Padding Triggers Reachable WINPR_ASSERT Abort (Client DoS)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, a missing bounds check in `smartcard_unpack_read_size_align()` (`libfreerdp/utils/smartcard_pack.c:1703`) allows a malicious RDP server to crash the FreeRDP client via a reachable `WINPR_ASSERT` → `abort()`. The crash occurs in upstream builds where `WITH_VERBOSE_WINPR_ASSERT=ON` (default in FreeRDP 3.22.0 / current WinPR CMake defaults). Smartcard redirection must be explicitly enabled by the user (e.g., `xfreerdp /smartcard`; `/smartcard-logon` implies `/smartcard`). Version 3.23.0 fixes the issue.

References

Affected products

FreeRDP
  • ==< 3.23.0

Matching in nixpkgs

Package maintainers

Upstream advisory: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7g72-39pq-4725
Upstream patch: https://github.com/FreeRDP/FreeRDP/commit/65d59d3b3c2f630f2ea862687ecf5f95f8115244