Multiple vulnerabilities in FreeRDP



| Updated: 2020-05-18
Risk High
Patch available YES
Number of vulnerabilities 14
CVE-ID CVE-2020-11521
CVE-2020-11522
CVE-2020-11524
CVE-2020-11523
CVE-2020-11525
CVE-2020-11045
CVE-2020-11046
CVE-2020-11048
CVE-2020-11049
CVE-2020-11047
CVE-2020-11042
CVE-2020-11058
CVE-2020-11526
CVE-2020-11044
CWE-ID CWE-787
CWE-125
CWE-190
CWE-415
Exploitation vector Network
Public exploit Public exploit code for vulnerability #13 is available.
Vulnerable software
 FreeRDP
Universal components / Libraries / Libraries used by multiple products

Vendor FreeRDP

Security Bulletin

This security bulletin contains information about 14 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU27988

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-11521

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in "libfreerdp/codec/planar.c". A remote attacker can trigger out-of-bounds write and execute arbitrary code on the target system.

Note: This vulnerability affects versions greater than 1.0

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: - - 2.0.0 rc4

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commits/master
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5cwc-6wc9-255w
https://pub.freerdp.com/cve/CVE-2020-11521/pocAnalysis_6.pdf


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds read

EUVDB-ID: #VU27987

Risk: High

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-11522

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in "libfreerdp/gdi/gdi.c". A remote attacker can trigger out-of-bounds read error and read contents of memory on the system or cause a denial of service condition.

Note: This vulnerability afffects versions greater than 1.0

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: - - 2.0.0 rc4

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commits/master
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-48wx-7vgj-fffh
https://pub.freerdp.com/cve/CVE-2020-11522/pocAnalysis_5.pdf


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Out-of-bounds write

EUVDB-ID: #VU27986

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-11524

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in "libfreerdp/codec/interleaved.c". A remote attacker can trigger out-of-bounds write and execute arbitrary code on the target system.

Note: This vulnerability affects versions greater than 1.0

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: - - 2.0.0 rc4

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commits/master
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cgw8-3mp2-p5qw
https://pub.freerdp.com/cve/CVE-2020-11524/pocAnalysis_3.pdf


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Integer overflow

EUVDB-ID: #VU27985

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-11523

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in "libfreerdp/gdi/region.c". A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note: This vulnerability affects versions greater than 1.0

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: - - 2.0.0 rc4

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commits/master
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4qrh-8cp8-4x42
https://pub.freerdp.com/cve/CVE-2020-11523/pocAnalysis_2.pdf


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Out-of-bounds read

EUVDB-ID: #VU27982

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11525

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in "libfreerdp/cache/bitmap.c". A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Note: This vulnerability affects versions greater than 1.0

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: - - 2.0.0 rc4

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commits/master
https://github.com/FreeRDP/FreeRDP/pull/6019/commits/58dc36b3c883fd460199cedb6d30e58eba58298c
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9755-fphh-gmjg
https://pub.freerdp.com/cve/CVE-2020-11525/pocAnalysis_1.pdf


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Out-of-bounds read

EUVDB-ID: #VU27980

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11045

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in "update_read_bitmap_data". A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Note: This vulnerability affects versions after 1.0

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: All versions

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commit/f8890a645c221823ac133dbf991f8a65ae50d637
https://github.com/FreeRDP/FreeRDP/issues/6005
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3x39-248q-f4q6


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Out-of-bounds read

EUVDB-ID: #VU27978

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11046

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in "update_read_synchronize". A remote attacker can trigger out-of-bounds read error and cause a denial of service condition on the target system.

Note: This vulnerability affects versions after 1.0

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: All versions

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commit/ed53cd148f43cbab905eaa0f5308c2bf3c48cc37
https://github.com/FreeRDP/FreeRDP/issues/6006
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hx48-wmmm-mr5q


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Out-of-bounds read

EUVDB-ID: #VU27977

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11048

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in "rdp_read_flow_control_pdu". A remote authenticated attacker can trigger out-of-bounds read error and cause a denial of service condition on the target system.

Note: This vulnerability affects versions after 1.0

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: All versions

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commit/9301bfe730c66180263248b74353daa99f5a969b
https://github.com/FreeRDP/FreeRDP/issues/6007
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hv8w-f2hx-5gcv


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Out-of-bounds read

EUVDB-ID: #VU27976

Risk: High

CVSSv4.0: 6.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-11049

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in "rdp_read_share_control_header". A remote attacker can trigger out-of-bounds read error and read contents of memory on the system or cause a denial of service condition.

Note: This vulnerability afffects versions greater than 1.1

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: All versions

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commit/c367f65d42e0d2e1ca248998175180aa9c2eacd0
https://github.com/FreeRDP/FreeRDP/issues/6008
https://github.com/FreeRDP/FreeRDP/pull/6019
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-wwh7-r2r8-xjpr


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

10) Out-of-bounds read

EUVDB-ID: #VU27975

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11047

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in "autodetect_recv_bandwidth_measure_results". A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Note: This vulnerability affects versions greater than 1.1

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: All versions

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commit/f5e73cc7c9cd973b516a618da877c87b80950b65
https://github.com/FreeRDP/FreeRDP/issues/6009
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9fw6-m2q8-h5pw


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

11) Out-of-bounds read

EUVDB-ID: #VU27974

Risk: High

CVSSv4.0: 6.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-11042

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in "update_read_icon_info". A remote attacker can trigger out-of-bounds read error and read contents of memory on the system or cause a denial of service condition.

Note: This vulnerability afffects versions greater than 1.1

Mitigation

Install update from vendor's website.

Vulnerable software versions

FreeRDP: All versions

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commit/6b2bc41935e53b0034fe5948aeeab4f32e80f30f
https://github.com/FreeRDP/FreeRDP/issues/6010
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9jp6-5vf2-cx2q


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

12) Out-of-bounds read

EUVDB-ID: #VU27973

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11058

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in "rdp_read_font_capability_set". A remote authenticated attacker can trigger out-of-bounds read error and cause a denial of service condition on the target system.

Note: This vulnerability affects versions after 1.1

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: All versions

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commit/3627aaf7d289315b614a584afb388f04abfb5bbf
https://github.com/FreeRDP/FreeRDP/issues/6011
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-wjg2-2f82-466g


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

13) Out-of-bounds read

EUVDB-ID: #VU27971

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-11526

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack

The vulnerability exists due to a boundary condition in "update_recv_secondary_order" function in the "libfreerdp/core/update.c" file. A remote attacker can trigger out-of-bounds read error and cause a denial of service condition on the target system.

Note: This vulnerability affects verions greater than 1.1

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: - - 2.0.0 rc4

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commits/master
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-97jw-m5w5-xvf9
https://pub.freerdp.com/cve/CVE-2020-11526/pocAnalysis_4.pdf


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

14) Double Free

EUVDB-ID: #VU27970

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-11044

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in "update_read_cache_bitmap_v3_order". A remote attacker can pass specially crafted data to the application, trigger double free error and cause a denal of service condition on the target system.

Note: This vulnerability affects versions greater than 1.2

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeRDP: All versions

CPE2.3 External links

https://github.com/FreeRDP/FreeRDP/commit/67c2aa52b2ae0341d469071d1bc8aab91f8d2ed8
https://github.com/FreeRDP/FreeRDP/issues/6013
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cgqh-p732-6x2w


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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