openEuler update for freerdp

Published: 2022-11-30

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-39317 CVE-2022-39320
CWE-ID	CWE-129 CWE-125
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	openEuler Operating systems & Components / Operating system freerdp-debugsource Operating systems & Components / Operating system package or component freerdp-help Operating systems & Components / Operating system package or component libwinpr-devel Operating systems & Components / Operating system package or component freerdp-devel Operating systems & Components / Operating system package or component freerdp-debuginfo Operating systems & Components / Operating system package or component libwinpr 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 2 vulnerabilities.

1) Improper Validation of Array Index

EUVDB-ID: #VU69592

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-2022-39317

CWE-ID: CWE-129 - Improper Validation of Array Index

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a missing range check for input offset index 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-debugsource: before 2.8.1-3

freerdp-help: before 2.8.1-3

libwinpr-devel: before 2.8.1-3

freerdp-devel: before 2.8.1-3

freerdp-debuginfo: before 2.8.1-3

libwinpr: before 2.8.1-3

freerdp: before 2.8.1-3

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2120

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: #VU69589

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-2022-39320

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