CVE-2022-39320

FreeRDP is a client implementation of the Remote Desktop Protocol (RDP) that follows Microsoft's open specifications. This package provides the client applications xfreerdp and wlfreerdp.

Security Fix(es):

FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP are missing a range check for input offset index in ZGFX decoder. A malicious server can trick a FreeRDP based client to read out of bound data and try to decode it. This issue has been addressed in version 2.9.0. There are no known workarounds for this issue.(CVE-2022-39317)

FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP may attempt integer addition on too narrow types leads to allocation of a buffer too small holding the data written. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the /usb redirection switch.(CVE-2022-39320)

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

• freerdp: clients using /parallel command line switch might read uninitialized data (CVE-2022-39282)

• freerdp: clients using the /video command line switch might read uninitialized data (CVE-2022-39283)

• freerdp: out of bounds read in zgfx decoder (CVE-2022-39316)

• freerdp: undefined behaviour in zgfx decoder (CVE-2022-39317)

• freerdp: division by zero in urbdrc channel (CVE-2022-39318)

• freerdp: missing length validation in urbdrc channel (CVE-2022-39319)

• freerdp: heap buffer overflow in urbdrc channel (CVE-2022-39320)

• freerdp: missing path sanitation with drive channel (CVE-2022-39347)

• freerdp: missing input length validation in drive channel (CVE-2022-41877)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.8 Release Notes linked from the References section.

FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP may attempt integer addition on too narrow types leads to allocation of a buffer too small holding the data written. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the /usb redirection switch.

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

• freerdp: clients using /parallel command line switch might read uninitialized data (CVE-2022-39282)
• freerdp: clients using the /video command line switch might read uninitialized data (CVE-2022-39283)
• freerdp: out of bounds read in zgfx decoder (CVE-2022-39316)
• freerdp: undefined behaviour in zgfx decoder (CVE-2022-39317)
• freerdp: division by zero in urbdrc channel (CVE-2022-39318)
• freerdp: missing length validation in urbdrc channel (CVE-2022-39319)
• freerdp: heap buffer overflow in urbdrc channel (CVE-2022-39320)
• freerdp: missing path sanitation with drive channel (CVE-2022-39347)
• freerdp: missing input length validation in drive channel (CVE-2022-41877)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.

Security Fix(es):

• freerdp: clients using /parallel command line switch might read uninitialized data (CVE-2022-39282)
• freerdp: clients using the /video command line switch might read uninitialized data (CVE-2022-39283)
• freerdp: out of bounds read in zgfx decoder (CVE-2022-39316)
• freerdp: undefined behaviour in zgfx decoder (CVE-2022-39317)
• freerdp: division by zero in urbdrc channel (CVE-2022-39318)
• freerdp: missing length validation in urbdrc channel (CVE-2022-39319)
• freerdp: heap buffer overflow in urbdrc channel (CVE-2022-39320)
• freerdp: missing path sanitation with drive channel (CVE-2022-39347)
• freerdp: missing input length validation in drive channel (CVE-2022-41877)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

In affected versions there is an out of bound read in ZGFX decoder component of FreeRDP. A malicious server can trick a FreeRDP based client to read out of bound data and try to decode it likely resulting in a crash. (CVE-2022-39316)

Affected versions of FreeRDP are missing a range check for input offset index in ZGFX decoder. A malicious server can trick a FreeRDP based client to read out of bound data and try to decode it. (CVE-2022-39317)

Affected versions of FreeRDP are missing input validation in 'urbdrc' channel. A malicious server can trick a FreeRDP based client to crash with division by zero. (CVE-2022-39318)

Affected versions of FreeRDP are missing input length validation in the 'urbdrc' channel. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server. (CVE-2022-39319)

Affected versions of FreeRDP may attempt integer addition on too narrow types leads to allocation of a buffer too small holding the data written. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server. (CVE-2022-39320)

Affected versions of FreeRDP are missing path canonicalization and base path check for drive channel. A malicious server can trick a FreeRDP based client to read files outside the shared directory. (CVE-2022-39347)

These are all security issues fixed in the freerdp-2.9.0-1.1 package on the GA media of openSUSE Tumbleweed.

This update for freerdp fixes the following issues:

• CVE-2022-39316: Fixed out of bound read in zgfx decoder (bsc#1205512).
• CVE-2022-39317: Fixed undefined behaviour in zgfx decoder (bsc#1205512).
• CVE-2022-39320: Fixed heap buffer overflow in urbdrc channel (bsc#1205512).
• CVE-2022-39347: Fixed missing path sanitation with drive channel (bsc#1205512).
• CVE-2022-41877: Fixed missing input length validation in drive channel (bsc#1205512).

This update for freerdp fixes the following issues:

• CVE-2022-39316: Fixed out of bound read in zgfx decoder (bsc#1205512).
• CVE-2022-39317: Fixed undefined behaviour in zgfx decoder (bsc#1205512).
• CVE-2022-39320: Fixed heap buffer overflow in urbdrc channel (bsc#1205512).
• CVE-2022-39347: Fixed missing path sanitation with drive channel (bsc#1205512).
• CVE-2022-41877: Fixed missing input length validation in drive channel (bsc#1205512).

It was discovered that FreeRDP incorrectly handled certain data lenghts. A malicious server could use this issue to cause FreeRDP clients to crash, resulting in a denial of service, or possibly obtain sensitive information. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2022-39282, CVE-2022-39283)

It was discovered that FreeRDP incorrectly handled certain data lenghts. A malicious server could use this issue to cause FreeRDP clients to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2022-39316, CVE-2022-39317, CVE-2022-39318, CVE-2022-39319, CVE-2022-39320)

It was discovered that FreeRDP incorrectly handled certain path checks. A malicious server could use this issue to cause FreeRDP clients to read files outside of the shared directory. (CVE-2022-39347)