Summary
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.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | freerdp2 | 2.6.1+dfsg1-0ubuntu0.20.04.2 |
| Ubuntu · 22.04 LTS 22.04:LTS | freerdp2 | 2.6.1+dfsg1-3ubuntu2.7 |
Vulnerabilities 4
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Critical 9.8
FreeRDP ExtractRunLengthRegular* out of bound read
FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients prior to version 3.5.1 are vulnerable to out-of-bounds read. Version 3.5.1 contains a patch for the issue. No known workarounds are available.
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Critical 9.8
freerdp_image_copy out of bound read
FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients prior to version 3.5.1 are vulnerable to out-of-bounds read if `((nWidth == 0) and (nHeight == 0))`. Version 3.5.1 contains a patch for the issue. No known workarounds are …
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High 7.5
FreeRDP zgfx_decompress out of memory vulnerability
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.5.1, a malicious server can crash the FreeRDP client by sending invalid huge allocation size. Version 3.5.1 contains a patch for the issue. No known workarounds are available.
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High 7.5
FreeRDP rdp_write_logon_info_v1 NULL access
FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients prior to version 3.5.1 are vulnerable to a possible `NULL` access and crash. Version 3.5.1 contains a patch for the issue. No known workarounds are available.