Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2023-31130

Buffer Underwrite ('Buffer Underflow')

Published: May 25, 2023 | Modified: Feb 13, 2025
CVSS 3.x
6.4
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
5.7 MODERATE
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2023-31130
CWEhttps://cwe.mitre.org/data/definitions/124.html

c-ares is an asynchronous resolver library. 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. This issue has been fixed in 1.19.1.

Weakness

The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.

Affected Software

NameVendorStart VersionEnd Version
C-aresC-ares_project*1.19.1 (excluding)
Red Hat Enterprise Linux 8RedHatnodejs:16-8080020230608150024.63b34585*
Red Hat Enterprise Linux 8RedHatnodejs:18-8080020230607122508.63b34585*
Red Hat Enterprise Linux 8RedHatc-ares-0:1.13.0-9.el8_9.1*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatnodejs:16-8060020230620060944.ad008a3a*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatc-ares-0:1.13.0-6.el8_6.2*
Red Hat Enterprise Linux 8.8 Extended Update SupportRedHatc-ares-0:1.13.0-6.el8_8.3*
Red Hat Enterprise Linux 9RedHatnodejs:18-9020020230531092345.rhel9*
Red Hat Enterprise Linux 9RedHatnodejs-1:16.19.1-2.el9_2*
Red Hat Enterprise Linux 9RedHatc-ares-0:1.19.1-1.el9*
Red Hat Enterprise Linux 9RedHatc-ares-0:1.19.1-1.el9*
Red Hat Enterprise Linux 9.0 Extended Update SupportRedHatnodejs-1:16.18.1-4.el9_0*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-nodejs14-nodejs-0:14.21.3-4.el7*
C-aresUbuntubionic*
C-aresUbuntuesm-infra/bionic*
C-aresUbuntuesm-infra/focal*
C-aresUbuntuesm-infra/xenial*
C-aresUbuntufocal*
C-aresUbuntujammy*
C-aresUbuntukinetic*
C-aresUbuntulunar*
C-aresUbuntutrusty*
C-aresUbuntuupstream*
C-aresUbuntuxenial*

Potential Mitigations

References

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