openEuler update for perl-Encode

1) Insecure library loading

EUVDB-ID: #VU55804

Risk: Low

CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-36770

CWE-ID: CWE-427 - Uncontrolled Search Path Element

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a logic error in the Encode.pm script. A local user can place a malicious library into the current working directory and escalate privileges on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP3

perl-Encode-help: before 3.06-2

perl-Encode-debuginfo: before 3.06-2

perl-Encode-debugsource: before 3.06-2

perl-Encode-devel: before 3.06-2

perl-Encode: before 3.06-2

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1549

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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