openEuler 20.03 LTS SP3 update for pki-core

1) XML External Entity injection

EUVDB-ID: #VU68953

Risk: Medium

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

CVE-ID: CVE-2022-2414

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: Yes

Description

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

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

pki-help: before 10.7.3-5

pki-tks: before 10.7.3-5

python3-pki: before 10.7.3-5

pki-base-java: before 10.7.3-5

pki-ocsp: before 10.7.3-5

pki-kra: before 10.7.3-5

pki-server: before 10.7.3-5

pki-ca: before 10.7.3-5

pki-base: before 10.7.3-5

pki-tps: before 10.7.3-5

pki-symkey: before 10.7.3-5

pki-tools: before 10.7.3-5

pki-core: before 10.7.3-5

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1418

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.