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.

According to the versions of the freerdp packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - 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-2020-11017)

  - 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-2020-11018)

  - 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-2020-11019)

  - 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-2020-11038)

  - 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-2020-11040)

  - 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-2020-11041)

  - 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-2020-11058)

  - 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-2020-11086)

  - 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-2020-11087)

  - 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-2020-11088)

  - libfreerdp/codec/planar.c in FreeRDP version > 1.0 through 2.0.0-rc4 has an Out-of-bounds Write.
    (CVE-2020-11521)

  - libfreerdp/gdi/region.c in FreeRDP versions > 1.0 through 2.0.0-rc4 has an Integer Overflow.
    (CVE-2020-11523)

  - libfreerdp/cache/bitmap.c in FreeRDP versions > 1.0 through 2.0.0-rc4 has an Out of bounds read.
    (CVE-2020-11525)

  - libfreerdp/core/update.c in FreeRDP versions > 1.1 through 2.0.0-rc4 has an Out-of-bounds Read.
    (CVE-2020-11526)

  - 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-2020-13397)

  - 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-2020-15103)

  - 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-2020-4030)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for freerdp fixes the following issues :

frerdp was updated to version 2.1.2 (bsc#1171441,bsc#1173247 and jsc#ECO-2006) :

  - CVE-2020-11017: Fixed a double free which could have     denied the server's service.

  - CVE-2020-11018: Fixed an out of bounds read which a     malicious clients could have triggered.

  - CVE-2020-11019: Fixed an issue which could have led to     denial of service if logger was set to 'WLOG_TRACE'.

  - CVE-2020-11038: Fixed a buffer overflow when /video     redirection was used.

  - CVE-2020-11039: Fixed an issue which could have allowed     arbitrary memory read and write when USB redirection was     enabled.

  - CVE-2020-11040: Fixed an out of bounds data read in     clear_decompress_subcode_rlex.

  - CVE-2020-11041: Fixed an issue with the configuration     for sound backend which could have led to server's     denial of service.

  - CVE-2020-11043: Fixed an out of bounds read in     rfx_process_message_tileset.

  - CVE-2020-11085: Fixed an out of bounds read in     cliprdr_read_format_list.

  - CVE-2020-11086: Fixed an out of bounds read in     ntlm_read_ntlm_v2_client_challenge.

  - CVE-2020-11087: Fixed an out of bounds read in     ntlm_read_AuthenticateMessage.

  - CVE-2020-11088: Fixed an out of bounds read in     ntlm_read_NegotiateMessage.

  - CVE-2020-11089: Fixed an out of bounds read in irp     function family.

  - CVE-2020-11095: Fixed a global out of bounds read in     update_recv_primary_order.

  - CVE-2020-11096: Fixed a global out of bounds read in     update_read_cache_bitmap_v3_order.

  - CVE-2020-11097: Fixed an out of bounds read in     ntlm_av_pair_get.

  - CVE-2020-11098: Fixed an out of bounds read in     glyph_cache_put.

  - CVE-2020-11099: Fixed an out of bounds Read in     license_read_new_or_upgrade_license_packet.

  - CVE-2020-11521: Fixed an out of bounds write in planar.c     (bsc#1171443).

  - CVE-2020-11522: Fixed an out of bounds read in gdi.c     (bsc#1171444).

  - CVE-2020-11523: Fixed an integer overflow in region.c     (bsc#1171445).

  - CVE-2020-11524: Fixed an out of bounds write in     interleaved.c (bsc#1171446).

  - CVE-2020-11525: Fixed an out of bounds read in bitmap.c     (bsc#1171447).

  - CVE-2020-11526: Fixed an out of bounds read in     update_recv_secondary_order (bsc#1171674).

  - CVE-2020-13396: Fixed an Read in     ntlm_read_ChallengeMessage.

  - CVE-2020-13397: Fixed an out of bounds read in     security_fips_decrypt due to uninitialized value.

  - CVE-2020-13398: Fixed an out of bounds write in     crypto_rsa_common.

  - CVE-2020-4030: Fixed an out of bounds read in     `TrioParse`.

  - CVE-2020-4031: Fixed a use after free in     gdi_SelectObject.

  - CVE-2020-4032: Fixed an integer casting in     `update_recv_secondary_order`.

  - CVE-2020-4033: Fixed an out of bound read in     RLEDECOMPRESS.

  - Fixed an issue where freerdp failed with -fno-common     (bsc#1169748).

  - Fixed an issue where USB redirection with FreeRDP was     not working (bsc#1169679).

This update was imported from the SUSE:SLE-15-SP1:Update update project.

The FreeRDP changelog reports 14 CVEs addressed after 2.0.0-rc4

ID	Name	Product	Family	Severity
182754	Debian dla-3606 : freerdp2-dev - security update	Nessus	Debian Local Security Checks	critical
160170	EulerOS 2.0 SP8 : freerdp (EulerOS-SA-2022-1564)	Nessus	Huawei Local Security Checks	medium
139018	openSUSE Security Update : freerdp (openSUSE-2020-1090)	Nessus	SuSE Local Security Checks	high
137249	FreeBSD : FreeRDP -- multiple vulnerabilities (669f3fe8-a07a-11ea-b83e-f0def1f5c5a2)	Nessus	FreeBSD Local Security Checks	medium

Detections

Analytics

CVE-2020-11017

medium

Tenable Plugins

critical

medium

high

medium