PT-2019-6285 · Nlnet+8 · Unbound+8

Published 2019-09-11 · Updated 2024-08-05 · CVE-2019-25032

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Unbound versions prior to 1.9.5

Description The issue is related to an integer overflow in the regional allocator via the regional alloc function in the util/regional.c component of the Unbound DNS server. This could potentially allow a remote attacker to access confidential data, compromise its integrity, and cause a denial of service. However, the vendor disputes that this is a vulnerability, stating that although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited.

Recommendations For Unbound versions prior to 1.9.5, update to version 1.9.5 or later to resolve the issue. As a temporary workaround, consider restricting access to the regional allocator to minimize the risk of exploitation.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

ALT-PU-2019-3282

ALT-PU-2019-3287

BDU:2022-06886

CESA-2021_1853

CVE-2019-25032

DLA-2652-1

OPENSUSE-SU-2022:0176-1

OPENSUSE-SU-2022_0176-1

RHSA-2021:1853

RHSA-2021_1853

RHSA-2022:0632

RLSA-2021:1853

SUSE-SU-2022:0176-1

SUSE-SU-2022:0176-2

SUSE-SU-2022:0301-1

USN-4938-1

Affected Products

Alt Linux

Astra Linux

Centos

Linuxmint

Red Hat

Rocky Linux

Suse

Ubuntu

Unbound

References · 146

• https://errata.rockylinux.org/RLSA-2021:1853 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-25035 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:0301-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05865 · Security Note
• https://osv.dev/vulnerability/RLSA-2021:1853 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-25040 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-25033 · Security Note
• https://errata.altlinux.org/ALT-PU-2019-3287 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-06245 · Security Note
• https://ubuntu.com/security/notices/USN-4938-1 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18934 · Security Note
• https://osv.dev/vulnerability/CVE-2019-25032 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-25032 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-25037 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-25032 · Vendor Advisory