CVE-2024-32040

FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients that use a version of FreeRDP prior to 3.5.0 or 2.11.6 and have connections to servers using the NSC codec are vulnerable to integer underflow. Versions 3.5.0 and 2.11.6 patch the issue. As a workaround, do not use the NSC codec (e.g. use -nsc).

• CVE-2024-32458: fix missing input length checks
• CVE-2024-32459: fix missing input length check
• CVE-2024-32460: fix out-of-bound read in interleaved_decompress
• CVE-2024-32039: fix integer overflow
• CVE-2024-32040: fix missing check
• CVE-2024-32041: fix integer overflow

This release is a security release and addresses multiple issues: [Low] OutOfBound Read in zgfx_decompress_segment. [Moderate] Integer overflow & OutOfBound Write in clear_decompress_residual_data. [Low] integer underflow in nsc_rle_decode. [Low] OutOfBound Read in planar_skip_plane_rle. [Low] OutOfBound Read in ncrush_decompress. [Low] OutOfBound Read in interleaved_decompress.

These are all security issues fixed in the freerdp-3.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the freerdp2-2.11.7-1.1 package on the GA media of openSUSE Tumbleweed.

This update for freerdp fixes the following issues:

Update to version 3.22.0 (jsc#PED-15526):

• Major bugfix release:

  • Complete overhaul of SDL client
  • Introduction of new WINPR_ATTR_NODISCARD macro wrapping compiler or C language version specific [[nodiscard]] attributes
  • Addition of WINPR_ATTR_NODISCARD to (some) public API functions so usage errors are producing warnings now
  • Add some more stringify functions for logging
  • We've received CVE reports, check https://github.com/FreeRDP/FreeRDP/security/advisories for more details! @Keryer reported an issue affecting client and proxy:
    • CVE-2026-23948 @ehdgks0627 did some more fuzzying and found quite a number of client side bugs.
    • CVE-2026-24682
    • CVE-2026-24683
    • CVE-2026-24676
    • CVE-2026-24677
    • CVE-2026-24678
    • CVE-2026-24684
    • CVE-2026-24679
    • CVE-2026-24681
    • CVE-2026-24675
    • CVE-2026-24491
    • CVE-2026-24680

• Changes from version 3.21.0

  • [core,info] fix missing NULL check (#12157)
  • [gateway,tsg] fix TSG_PACKET_RESPONSE parsing (#12161)
  • Allow querying auth identity with kerberos when running as a server (#12162)
  • Sspi krb heimdal (#12163)
  • Tsg fix idleTimeout parsing (#12167)
  • [channels,smartcard] revert 649f7de (#12166)
  • [crypto] deprecate er and der modules (#12170)
  • [channels,rdpei] lock full update, not only parts (#12175)
  • [winpr,platform] add WINPR_ATTR_NODISCARD macro (#12178)
  • Wlog cleanup (#12179)
  • new stringify functions & touch API defines (#12180)
  • Add support for querying SECPKG_ATTR_PACKAGE_INFO to NTLM and Kerberos (#12171)
  • [channels,video] measure times in ns (#12184)
  • [utils] Nodiscard (#12187)
  • Error handling fixes (#12186)
  • [channels,drdynvc] check pointer before reset (#12189)
  • Winpr api def (#12190)
  • [winpr,platform] drop C23 [[nodiscard]] (#12192)
  • [gdi] add additional checks for a valid rdpGdi (#12194)
  • Sdl3 high dpiv2 (#12173)
  • peer: Disconnect if Logon() returned FALSE (#12196)
  • [channels,rdpecam] fix PROPERTY_DESCRIPTION parsing (#12197)
  • [channel,rdpsnd] only clean up thread before free (#12199)
  • [channels,rdpei] add RDPINPUT_CONTACT_FLAG_UP (#12195)

• Update to version 3.21.0:

  • Bugfix release with a few new API functions addressing shortcomings with regard to input data validation. Thanks to @ehdgks0627 we have fixed the following additional (medium) client side vulnerabilities:

    • CVE-2026-23530
    • CVE-2026-23531
    • CVE-2026-23532
    • CVE-2026-23533
    • CVE-2026-23534
    • CVE-2026-23732
    • CVE-2026-23883
    • CVE-2026-23884

• Changes from version 3.20.2

  • [client,sdl] fix monitor resolution (#12142)
  • [codec,progressive] fix progressive_rfx_upgrade_block (#12143)
  • Krb cache fix (#12145)
  • Rdpdr improved checks (#12141)
  • Codec advanced length checks (#12146)
  • Glyph fix length checks (#12151)
  • Wlog printf format string checks (#12150)
  • [warnings,format] fix format string warnings (#12152)
  • Double free fixes (#12153)
  • [clang-tidy] clean up code warnings (#12154)

• Update to version 3.20.2:

  • Patch release fixing a regression with gateway connections introduced with 3.20.1

    What's Changed

    • Warnings and missing enumeration types (#12137)

• Changes from version 3.20.1:

  • New years cleanup release. Fixes some issues reported and does a cleaning sweep to bring down warnings. Thanks to @ehdgks0627 doing some code review/testing we've uncovered the following (medium) vulnerabilities:

    • CVE-2026-22851
    • CVE-2026-22852
    • CVE-2026-22853
    • CVE-2026-22854
    • CVE-2026-22855
    • CVE-2026-22856
    • CVE-2026-22857
    • CVE-2026-22858
    • CVE-2026-22859

  • These affect FreeRDP based clients only, with the exception of CVE-2026-22858 also affecting FreeRDP proxy. FreeRDP based servers are not affected.

• Update to version 3.20.0:

  *…

This update for freerdp fixes the following issues:

• CVE-2024-32039: Fixed an out-of-bounds write with variables of type uint32 (bsc#1223293)
• CVE-2024-32040: Fixed a integer underflow when using the 'NSC' codec (bsc#1223294)
• CVE-2024-32041: Fixed an out-of-bounds read in Stream_GetRemainingLength() (bsc#1223295)
• CVE-2024-32458: Fixed an out-of-bounds read on pSrcData[] (bsc#1223296)
• CVE-2024-32459: Fixed an out-of-bounds read in case SrcSize less than 4 (bsc#1223297)
• CVE-2024-32460: Fixed an out-of-bounds read when using '/bpp:32' legacy 'GDI' drawing path (bsc#1223298)

This update for freerdp fixes the following issues:

• CVE-2024-32039: Fixed an out-of-bounds write with variables of type uint32 (bsc#1223293)
• CVE-2024-32040: Fixed a integer underflow when using the 'NSC' codec (bsc#1223294)
• CVE-2024-32041: Fixed an out-of-bounds read in Stream_GetRemainingLength() (bsc#1223295)
• CVE-2024-32458: Fixed an out-of-bounds read on pSrcData[] (bsc#1223296)
• CVE-2024-32459: Fixed an out-of-bounds read in case SrcSize less than 4 (bsc#1223297)
• CVE-2024-32460: Fixed an out-of-bounds read when using '/bpp:32' legacy 'GDI' drawing path (bsc#1223298)

It was discovered that FreeRDP incorrectly handled certain context resets. If a user were tricked into connecting to a malicious server, a remote attacker could use this issue to cause FreeRDP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2024-22211)

Evgeny Legerov discovered that FreeRDP incorrectly handled certain memory operations. If a user were tricked into connecting to a malicious server, a remote attacker could use this issue to cause FreeRDP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2024-32039, CVE-2024-32040)

Evgeny Legerov discovered that FreeRDP incorrectly handled certain memory operations. If a user were tricked into connecting to a malicious server, a remote attacker could possibly use this issue to cause FreeRDP to crash, resulting in a denial of service. (CVE-2024-32041, CVE-2024-32458, CVE-2024-32460)

Evgeny Legerov discovered that FreeRDP incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause FreeRDP clients and servers to crash, resulting in a denial of service. (CVE-2024-32459)

Evgeny Legerov discovered that FreeRDP incorrectly handled certain memory operations. If a user were tricked into connecting to a malicious server, a remote attacker could use this issue to cause FreeRDP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2024-32039, CVE-2024-32040, CVE-2024-32041)

Evgeny Legerov discovered that FreeRDP incorrectly handled certain memory operations. If a user were tricked into connecting to a malicious server, a remote attacker could possibly use this issue to cause FreeRDP to crash, resulting in a denial of service. (CVE-2024-32458, CVE-2024-32460)

It was discovered that FreeRDP incorrectly handled certain memory operations. If a user were tricked into connecting to a malicious server, a remote attacker could possibly use this issue to cause FreeRDP to crash, resulting in a denial of service. (CVE-2024-32661)