openEuler 20.03 LTS SP3 update for logback

1) Code Injection

EUVDB-ID: #VU59053

Risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-42550

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation. A remote user can send a specially crafted request to the application and execute arbitrary code on the target system by tricking the application to load a malicious configuration from a remote LDAP server.

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

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

logback-access: before 1.2.8-2

logback-help: before 1.2.8-2

logback-examples: before 1.2.8-2

logback: before 1.2.8-2

CPE2.3

• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP3:*:*:*:*:*:*
• cpe:2.3:a:openeuler:logback-access:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:logback-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:logback-examples:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:logback:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1946

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.