openEuler 22.03 LTS SP1 update for c-ares

1) Buffer Underwrite ('Buffer Underflow')

EUVDB-ID: #VU76425

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-31130

CWE-ID: CWE-124 - Buffer Underwrite ('Buffer Underflow')

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a buffer underflow when using certain IPv6 addresses, such as 0::00:00:00/2". A local privileged user can trigger a boundary error and crash the service.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP1

c-ares-help: before 1.18.1-7

c-ares-debuginfo: before 1.18.1-7

c-ares-debugsource: before 1.18.1-7

c-ares-devel: before 1.18.1-7

c-ares: before 1.18.1-7

CPE2.3

• cpe:2.3:o:openeuler:openeuler:22.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:a:openeuler:c-ares-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:c-ares-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:c-ares-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:c-ares-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:c-ares:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1360

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.