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Debian LTS Advisory DLA-3606-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Tobias Frost
October 07, 2023 https://wiki.debian.org/LTS
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Package : freerdp2
Version : 2.3.0+dfsg1-2+deb10u3
CVE ID : CVE-2020-4030 CVE-2020-4031 CVE-2020-4032 CVE-2020-4033
CVE-2020-11017 CVE-2020-11018 CVE-2020-11019 CVE-2020-11038
CVE-2020-11039 CVE-2020-11040 CVE-2020-11041 CVE-2020-11042
CVE-2020-11043 CVE-2020-11044 CVE-2020-11045 CVE-2020-11046
CVE-2020-11047 CVE-2020-11048 CVE-2020-11049 CVE-2020-11058
CVE-2020-11085 CVE-2020-11086 CVE-2020-11087 CVE-2020-11088
CVE-2020-11089 CVE-2020-11095 CVE-2020-11096 CVE-2020-11097
CVE-2020-11098 CVE-2020-11099 CVE-2020-13396 CVE-2020-13397
CVE-2020-13398 CVE-2020-15103 CVE-2023-39350 CVE-2023-39351
CVE-2023-39352 CVE-2023-39353 CVE-2023-39354 CVE-2023-39355
CVE-2023-39356 CVE-2023-40567 CVE-2023-40181 CVE-2023-40186
CVE-2023-40188 CVE-2023-40569 CVE-2023-40589
Debian Bug : 965979 1051638
Multiple vulnerabilties have been found in freelrdp2, a free
implementation of the Remote Desktop Protocol (RDP).
The vulnerabilties potentially allows buffer overreads, buffer overflows,
interger overflows, use-after-free, DoS vectors.
CVE-2020-4030
In FreeRDP before version 2.1.2, there is an out of bounds read in
TrioParse. Logging might bypass string length checks due to an
integer overflow. This is fixed in version 2.1.2.
CVE-2020-4031
In FreeRDP before version 2.1.2, there is a use-after-free in
gdi_SelectObject. All FreeRDP clients using compatibility mode with
/relax-order-checks are affected. This is fixed in version 2.1.2.
CVE-2020-4032
In FreeRDP before version 2.1.2, there is an integer casting
vulnerability in update_recv_secondary_order. All clients with
+glyph-cache /relax-order-checks are affected. This is fixed in
version 2.1.2.
CVE-2020-4033
In FreeRDP before version 2.1.2, there is an out of bounds read in
RLEDECOMPRESS. All FreeRDP based clients with sessions with color
depth < 32 are affected. This is fixed in version 2.1.2.
CVE-2020-11017
In FreeRDP less than or equal to 2.0.0, by providing manipulated
input a malicious client can create a double free condition and
crash the server. This is fixed in version 2.1.0.
CVE-2020-11018
In FreeRDP less than or equal to 2.0.0, a possible resource
exhaustion vulnerability can be performed. Malicious clients could
trigger out of bound reads causing memory allocation with random
size. This has been fixed in 2.1.0.
CVE-2020-11019
In FreeRDP less than or equal to 2.0.0, when running with logger set
to "WLOG_TRACE", a possible crash of application could occur due to
a read of an invalid array index. Data could be printed as string to
local terminal. This has been fixed in 2.1.0.
CVE-2020-11038
In FreeRDP less than or equal to 2.0.0, an Integer Overflow to
Buffer Overflow exists. When using /video redirection, a manipulated
server can instruct the client to allocate a buffer with a smaller
size than requested due to an integer overflow in size calculation.
With later messages, the server can manipulate the client to write
data out of bound to the previously allocated buffer. This has been
patched in 2.1.0.
CVE-2020-11039
In FreeRDP less than or equal to 2.0.0, when using a manipulated
server with USB redirection enabled (nearly) arbitrary memory can be
read and written due to integer overflows in length checks. This has
been patched in 2.1.0.
CVE-2020-11040
In FreeRDP less than or equal to 2.0.0, there is an out-of-bound
data read from memory in clear_decompress_subcode_rlex, visualized
on screen as color. This has been patched in 2.1.0.
CVE-2020-11041
In FreeRDP less than or equal to 2.0.0, an outside controlled array
index is used unchecked for data used as configuration for sound
backend (alsa, oss, pulse, ...). The most likely outcome is a crash
of the client instance followed by no or distorted sound or a
session disconnect. If a user cannot upgrade to the patched version,
a workaround is to disable sound for the session. This has been
patched in 2.1.0.
CVE-2020-11042
In FreeRDP greater than 1.1 and before 2.0.0, there is an
out-of-bounds read in update_read_icon_info. It allows reading a
attacker-defined amount of client memory (32bit unsigned -> 4GB) to
an intermediate buffer. This can be used to crash the client or
store information for later retrieval. This has been patched in
2.0.0.
CVE-2020-11043
In FreeRDP less than or equal to 2.0.0, there is an out-of-bounds
read in rfx_process_message_tileset. Invalid data fed to RFX decoder
results in garbage on screen (as colors). This has been patched in
2.1.0.
CVE-2020-11044
In FreeRDP greater than 1.2 and before 2.0.0, a double free in
update_read_cache_bitmap_v3_order crashes the client application if
corrupted data from a manipulated server is parsed. This has been
patched in 2.0.0.
CVE-2020-11045
In FreeRDP after 1.0 and before 2.0.0, there is an out-of-bound read
in in update_read_bitmap_data that allows client memory to be read
to an image buffer. The result displayed on screen as colour.
CVE-2020-11046
In FreeRDP after 1.0 and before 2.0.0, there is a stream
out-of-bounds seek in update_read_synchronize that could lead to a
later out-of-bounds read.
CVE-2020-11047
In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bounds
read in autodetect_recv_bandwidth_measure_results. A malicious
server can extract up to 8 bytes of client memory with a manipulated
message by providing a short input and reading the measurement
result data. This has been patched in 2.0.0.
CVE-2020-11048
In FreeRDP after 1.0 and before 2.0.0, there is an out-of-bounds
read. It only allows to abort a session. No data extraction is
possible. This has been fixed in 2.0.0.
CVE-2020-11049
In FreeRDP after 1.1 and before 2.0.0, there is an out-of-bound read
of client memory that is then passed on to the protocol parser. This
has been patched in 2.0.0.
CVE-2020-11058
In FreeRDP after 1.1 and before 2.0.0, a stream out-of-bounds seek
in rdp_read_font_capability_set could lead to a later out-of-bounds
read. As a result, a manipulated client or server might force a
disconnect due to an invalid data read. This has been fixed in
2.0.0.
CVE-2020-11085
In FreeRDP before 2.1.0, there is an out-of-bounds read in
cliprdr_read_format_list. Clipboard format data read (by client or
server) might read data out-of-bounds. This has been fixed in 2.1.0.
CVE-2020-11086
In FreeRDP less than or equal to 2.0.0, there is an out-of-bound
read in ntlm_read_ntlm_v2_client_challenge that reads up to 28 bytes
out-of-bound to an internal structure. This has been fixed in 2.1.0.
CVE-2020-11087
In FreeRDP less than or equal to 2.0.0, there is an out-of-bound
read in ntlm_read_AuthenticateMessage. This has been fixed in 2.1.0.
CVE-2020-11088
In FreeRDP less than or equal to 2.0.0, there is an out-of-bound
read in ntlm_read_NegotiateMessage. This has been fixed in 2.1.0.
CVE-2020-11089
In FreeRDP before 2.1.0, there is an out-of-bound read in irp
functions (parallel_process_irp_create, serial_process_irp_create,
drive_process_irp_write, printer_process_irp_write, rdpei_recv_pdu,
serial_process_irp_write). This has been fixed in 2.1.0.
CVE-2020-11095
In FreeRDP before version 2.1.2, an out of bound reads occurs
resulting in accessing a memory location that is outside of the
boundaries of the static array PRIMARY_DRAWING_ORDER_FIELD_BYTES.
This is fixed in version 2.1.2
CVE-2020-11096
In FreeRDP before version 2.1.2, there is a global OOB read in
update_read_cache_bitmap_v3_order. As a workaround, one can disable
bitmap cache with -bitmap-cache (default). This is fixed in version
2.1.2.
CVE-2020-11097
In FreeRDP before version 2.1.2, an out of bounds read occurs
resulting in accessing a memory location that is outside of the
boundaries of the static array PRIMARY_DRAWING_ORDER_FIELD_BYTES.
This is fixed in version 2.1.2.
CVE-2020-11098
In FreeRDP before version 2.1.2, there is an out-of-bound read in
glyph_cache_put. This affects all FreeRDP clients with
`+glyph-cache` option enabled This is fixed in version 2.1.2.
CVE-2020-11099
In FreeRDP before version 2.1.2, there is an out of bounds read in
license_read_new_or_upgrade_license_packet. A manipulated license
packet can lead to out of bound reads to an internal buffer. This is
fixed in version 2.1.2.
CVE-2020-13396
In FreeRDP before version 2.1.2, there is an out of bounds read in
license_read_new_or_upgrade_license_packet. A manipulated license
packet can lead to out of bound reads to an internal buffer. This is
fixed in version 2.1.2.
CVE-2020-13397
An issue was discovered in FreeRDP before 2.1.1. An out-of-bounds
(OOB) read vulnerability has been detected in security_fips_decrypt
in libfreerdp/core/security.c due to an uninitialized value.
CVE-2020-13398
An issue was discovered in FreeRDP before 2.1.1. An out-of-bounds
(OOB) write vulnerability has been detected in crypto_rsa_common in
libfreerdp/crypto/crypto.c.
CVE-2020-15103
In FreeRDP less than or equal to 2.1.2, an integer overflow exists
due to missing input sanitation in rdpegfx channel. All FreeRDP
clients are affected. The input rectangles from the server are not
checked against local surface coordinates and blindly accepted. A
malicious server can send data that will crash the client later on
(invalid length arguments to a `memcpy`) This has been fixed in
2.2.0. As a workaround, stop using command line arguments /gfx,
/gfx-h264 and /network:auto
CVE-2023-39350
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. This issue affects Clients
only. Integer underflow leading to DOS (e.g. abort due to
`WINPR_ASSERT` with default compilation flags). When an insufficient
blockLen is provided, and proper length validation is not performed,
an Integer Underflow occurs, leading to a Denial of Service (DOS)
vulnerability. This issue has been addressed in versions 2.11.0 and
3.0.0-beta3. Users are advised to upgrade. There are no known
workarounds for this vulnerability.
CVE-2023-39351
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. Affected versions of
FreeRDP are subject to a Null Pointer Dereference leading a crash in
the RemoteFX (rfx) handling. Inside the
`rfx_process_message_tileset` function, the program allocates tiles
using `rfx_allocate_tiles` for the number of numTiles. If the
initialization process of tiles is not completed for various
reasons, tiles will have a NULL pointer. Which may be accessed in
further processing and would cause a program crash. This issue has
been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised
to upgrade. There are no known workarounds for this vulnerability.
CVE-2023-39352
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. Affected versions are
subject to an invalid offset validation leading to Out Of Bound
Write. This can be triggered when the values `rect->left` and
`rect->top` are exactly equal to `surface->width` and
`surface->height`. eg. `rect->left` == `surface->width` &&
`rect->top` == `surface->height`. In practice this should cause a
crash. This issue has been addressed in versions 2.11.0 and
3.0.0-beta3. Users are advised to upgrade. There are no known
workarounds for this vulnerability.
CVE-2023-39353
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. Affected versions are
subject to a missing offset validation leading to Out Of Bound Read.
In the `libfreerdp/codec/rfx.c` file there is no offset validation
in `tile->quantIdxY`, `tile->quantIdxCb`, and `tile->quantIdxCr`. As
a result crafted input can lead to an out of bounds read access
which in turn will cause a crash. This issue has been addressed in
versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There
are no known workarounds for this vulnerability.
CVE-2023-39354
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. Affected versions are
subject to an Out-Of-Bounds Read in the `nsc_rle_decompress_data`
function. The Out-Of-Bounds Read occurs because it processes
`context->Planes` without checking if it contains data of sufficient
length. Should an attacker be able to leverage this vulnerability
they may be able to cause a crash. This issue has been addressed in
versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There
are no known workarounds for this vulnerability.
CVE-2023-39355
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. Versions of FreeRDP on the
3.x release branch before beta3 are subject to a Use-After-Free in
processing `RDPGFX_CMDID_RESETGRAPHICS` packets. If
`context->maxPlaneSize` is 0, `context->planesBuffer` will be freed.
However, without updating `context->planesBuffer`, this leads to a
Use-After-Free exploit vector. In most environments this should only
result in a crash. This issue has been addressed in version
3.0.0-beta3 and users of the beta 3.x releases are advised to
upgrade. There are no known workarounds for this vulnerability.
CVE-2023-39356
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. In affected versions a
missing offset validation may lead to an Out Of Bound Read in the
function `gdi_multi_opaque_rect`. In particular there is no code to
validate if the value `multi_opaque_rect->numRectangles` is less
than 45. Looping through `multi_opaque_rect->`numRectangles without
proper boundary checks can lead to Out-of-Bounds Read errors which
will likely lead to a crash. This issue has been addressed in
versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There
are no known workarounds for this vulnerability.
CVE-2023-40567
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. Affected versions are
subject to an Out-Of-Bounds Write in the
`clear_decompress_bands_data` function in which there is no offset
validation. Abuse of this vulnerability may lead to an out of bounds
write. This issue has been addressed in versions 2.11.0 and
3.0.0-beta3. Users are advised to upgrade. there are no known
workarounds for this vulnerability.
CVE-2023-40181
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. Affected versions are
subject to an Integer-Underflow leading to Out-Of-Bound Read in the
`zgfx_decompress_segment` function. In the context of `CopyMemory`,
it's possible to read data beyond the transmitted packet range and
likely cause a crash. This issue has been addressed in versions
2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no
known workarounds for this issue.
CVE-2023-40186
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. Affected versions are
subject to an IntegerOverflow leading to Out-Of-Bound Write
Vulnerability in the `gdi_CreateSurface` function. This issue
affects FreeRDP based clients only. FreeRDP proxies are not affected
as image decoding is not done by a proxy. This issue has been
addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to
upgrade. There are no known workarounds for this issue.
CVE-2023-40188
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. Affected versions are
subject to an Out-Of-Bounds Read in the `general_LumaToYUV444`
function. This Out-Of-Bounds Read occurs because processing is done
on the `in` variable without checking if it contains data of
sufficient length. Insufficient data for the `in` variable may cause
errors or crashes. This issue has been addressed in versions 2.11.0
and 3.0.0-beta3. Users are advised to upgrade. There are no known
workarounds for this issue.
CVE-2023-40569
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. Affected versions are
subject to an Out-Of-Bounds Write in the `progressive_decompress`
function. This issue is likely down to incorrect calculations of the
`nXSrc` and `nYSrc` variables. This issue has been addressed in
versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. there
are no known workarounds for this vulnerability.
CVE-2023-40589
FreeRDP is a free implementation of the Remote Desktop Protocol
(RDP), released under the Apache license. In affected versions there
is a Global-Buffer-Overflow in the ncrush_decompress function.
Feeding crafted input into this function can trigger the overflow
which has only been shown to cause a crash. This issue has been
addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to
upgrade. There are no known workarounds for this issue.
For Debian 10 buster, these problems have been fixed in version
2.3.0+dfsg1-2+deb10u3.
We recommend that you upgrade your freerdp2 packages.
For the detailed security status of freerdp2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/freerdp2
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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