openEuler update for expat

1) Use-after-free

EUVDB-ID: #VU67532

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-40674

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the doContent() function in xmlparse.c. A remote attacker can pass specially crafted input to the application that is using the affected library, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

expat-help: before 2.2.9-8

expat-debugsource: before 2.2.9-8

expat-debuginfo: before 2.2.9-8

expat-devel: before 2.2.9-8

expat: before 2.2.9-8

CPE2.3

• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP3:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openeuler:22.03:LTS:*:*:*:*:*:*
• cpe:2.3:a:openeuler:expat-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:expat-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:expat-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:expat-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:expat:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1932

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.