openEuler update for freerdp

Published: 2022-11-25

Risk	Medium
Patch available	YES
Number of vulnerabilities	5
CVE-ID	CVE-2022-39347 CVE-2022-39316 CVE-2022-39319 CVE-2022-41877 CVE-2022-39318
CWE-ID	CWE-36 CWE-125 CWE-369
Exploitation vector	Network
Public exploit	N/A
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-debugsource Operating systems & Components / Operating system package or component libwinpr Operating systems & Components / Operating system package or component freerdp-help 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 5 vulnerabilities.

1) Absolute Path Traversal

EUVDB-ID: #VU69588

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-39347

CWE-ID: CWE-36 - Absolute Path Traversal

Exploit availability: No

Description

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

The vulnerability exists due to missing path canonicalization and base path check for drive channel. A malicious server can trick the FreeRDP client to read files outside the shared directory.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

freerdp-devel: before 2.8.1-2

libwinpr-devel: before 2.8.1-2

freerdp-debuginfo: before 2.8.1-2

freerdp-debugsource: before 2.8.1-2

libwinpr: before 2.8.1-2

freerdp-help: before 2.8.1-2

freerdp: before 2.8.1-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2112

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: #VU69594

Risk: Medium

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

CVE-ID: CVE-2022-39316

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 ZGFX decoder. A malicious server can trick a FreeRDP based client to read out of bound data and try to decode it.

Successful exploitation of the vulnerability may allows remote code execution.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

freerdp-devel: before 2.8.1-2

libwinpr-devel: before 2.8.1-2

freerdp-debuginfo: before 2.8.1-2

freerdp-debugsource: before 2.8.1-2

libwinpr: before 2.8.1-2

freerdp-help: before 2.8.1-2

freerdp: before 2.8.1-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2112

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: #VU69591

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-39319

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 urbdrc channel. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

freerdp-devel: before 2.8.1-2

libwinpr-devel: before 2.8.1-2

freerdp-debuginfo: before 2.8.1-2

freerdp-debugsource: before 2.8.1-2

libwinpr: before 2.8.1-2

freerdp-help: before 2.8.1-2

freerdp: before 2.8.1-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2112

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: #VU69590

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-41877

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 within the drive channel. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

freerdp-devel: before 2.8.1-2

libwinpr-devel: before 2.8.1-2

freerdp-debuginfo: before 2.8.1-2

freerdp-debugsource: before 2.8.1-2

libwinpr: before 2.8.1-2

freerdp-help: before 2.8.1-2

freerdp: before 2.8.1-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2112

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) Division by zero

EUVDB-ID: #VU69593

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-39318

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

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

The vulnerability exists due to a division by zero error in urbdrc channel. A malicious server can pass specially crafted data to the application and crash it.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

freerdp-devel: before 2.8.1-2

libwinpr-devel: before 2.8.1-2

freerdp-debuginfo: before 2.8.1-2

freerdp-debugsource: before 2.8.1-2

libwinpr: before 2.8.1-2

freerdp-help: before 2.8.1-2

freerdp: before 2.8.1-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2112

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.