openEuler 20.03 LTS SP1 update for expat

1) Resource exhaustion

EUVDB-ID: #VU42119

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-0340

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows remote attackers to cause a denial of service attack.

The vulnerability exists due to insufficient validation of user-supplied input within the expat library, when processing XML files. A remote attacker can pass specially crafted XML content to the affected library and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1

expat-help: before 2.2.9-3

expat-debuginfo: before 2.2.9-3

expat-devel: before 2.2.9-3

expat-debugsource: before 2.2.9-3

expat: before 2.2.9-3

CPE2.3

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

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1261

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.