openEuler update for freerdp

Published: 2021-02-04

Risk	High
Patch available	YES
Number of vulnerabilities	11
CVE-ID	CVE-2020-11526 CVE-2020-11044 CVE-2020-11042 CVE-2020-11095 CVE-2020-11045 CVE-2020-11522 CVE-2020-11524 CVE-2020-11521 CVE-2020-11525 CVE-2020-11523 CVE-2019-17177
CWE-ID	CWE-125 CWE-415 CWE-787 CWE-190 CWE-401
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	openEuler Operating systems & Components / Operating system freerdp-devel Operating systems & Components / Operating system package or component libwinpr-devel Operating systems & Components / Operating system package or component freerdp-debuginfo Operating systems & Components / Operating system package or component freerdp-help Operating systems & Components / Operating system package or component libwinpr Operating systems & Components / Operating system package or component freerdp-debugsource Operating systems & Components / Operating system package or component freerdp Operating systems & Components / Operating system package or component
Vendor	openEuler

Security Bulletin

This security bulletin contains information about 11 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU27971

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

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 repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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.

2) Double Free

EUVDB-ID: #VU27970

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

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 repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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 read

EUVDB-ID: #VU27974

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

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 updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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) Out-of-bounds read

EUVDB-ID: #VU29363

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-11095

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_recv_primary_order". A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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: #VU27980

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

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 repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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: #VU27987

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

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 repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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 write

EUVDB-ID: #VU27986

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

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 repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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 write

EUVDB-ID: #VU27988

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

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 repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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.

9) Out-of-bounds read

EUVDB-ID: #VU27982

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

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 repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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) Integer overflow

EUVDB-ID: #VU27985

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

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 repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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) Memory leak

EUVDB-ID: #VU23150

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-17177

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The vulnerability exists due memory leak in "libfreerdp/codec/region.c" file when a supplied realloc pointer (i.e., the first argument to realloc) is also used for a realloc return value. A remote attacker can cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

freerdp-devel: before 2.2.0-2

libwinpr-devel: before 2.2.0-2

freerdp-debuginfo: before 2.2.0-2

freerdp-help: before 2.2.0-2

libwinpr: before 2.2.0-2

freerdp-debugsource: before 2.2.0-2

freerdp: before 2.2.0-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1008

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.