openEuler 20.03 LTS SP3 update for openvswitch

1) Integer underflow

EUVDB-ID: #VU70459

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-4338

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer underflow when parsing Auto Attach TLV. A remote attacker can send specially crafted LLDP messages to the affected system, trigger an integer underflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, by default interfaces are not configured to process LLDP messages.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

openvswitch-devel: before 2.12.4-3

openvswitch-debugsource: before 2.12.4-3

openvswitch-debuginfo: before 2.12.4-3

python3-openvswitch: before 2.12.4-3

openvswitch-help: before 2.12.4-3

openvswitch: before 2.12.4-3

CPE2.3

• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP3:*:*:*:*:*:*
• cpe:2.3:a:openeuler:openvswitch-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:openvswitch-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:openvswitch-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:python3-openvswitch:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:openvswitch-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:openvswitch:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1042

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.