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CVE-2023-31130

Public on 2023-05-22
Modified on 2024-02-10
Description

ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2" was found to cause an issue. C-ares only uses this function internally for configuration purposes which would require an administrator to configure such an address via ares_set_sortlist().

However, users may externally use ares_inet_net_pton() for other purposes and thus be vulnerable to more severe issues.

Severity
Medium
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CVSS v3 Base Score
5.3
See breakdown
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Core c-ares 2024-01-03 21:04 ALAS2-2024-2399
Amazon Linux 2023 c-ares 2023-06-05 16:39 ALAS2023-2023-198
Amazon Linux 2 - Ecs Extra ecs-service-connect-agent 2023-09-14 01:06 ALAS2ECS-2023-007
Amazon Linux 2023 ecs-service-connect-agent 2023-09-14 00:54 ALAS2023-2023-344

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.3 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H
NVD CVSSv3 4.1 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

References

Red Hat: CVE-2023-31130 Mitre: CVE-2023-31130 FAQs regarding Amazon Linux ALAS/CVE Severity