SUSE update for expat

1) Use-after-free

EUVDB-ID: #VU68718

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-43680

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate. A remote attacker can trigger a use-after-free error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package expat to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 9

SUSE Linux Enterprise Software Development Kit: 12-SP5

SUSE Linux Enterprise Server for SAP: 12-SP4

SUSE Linux Enterprise Server for SAP Applications: 12-SP5

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP5

SUSE OpenStack Cloud: 9

libexpat-devel: before 2.1.0-21.28.1

libexpat1-debuginfo-32bit: before 2.1.0-21.28.1

libexpat1-debuginfo: before 2.1.0-21.28.1

libexpat1-32bit: before 2.1.0-21.28.1

libexpat1: before 2.1.0-21.28.1

expat-debugsource: before 2.1.0-21.28.1

expat-debuginfo-32bit: before 2.1.0-21.28.1

expat-debuginfo: before 2.1.0-21.28.1

expat: before 2.1.0-21.28.1

CPE2.3

• cpe:2.3:o:suse:suse_openstack_cloud_crowbar:9:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_software_development_kit:12-SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:12-SP4:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications:12-SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP2-BCL:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP3-BCL:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP4-LTSS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_openstack_cloud:9:*:*:*:*:*:*:*
• cpe:2.3:a:suse:libexpat-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libexpat1-debuginfo-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libexpat1-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libexpat1-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libexpat1:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:expat-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:expat-debuginfo-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:expat-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:expat:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20223874-1/

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.