Unbound up to 1.9.4 regional_alloc integer overflow ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k1.20

Summaryinfo

A vulnerability was found in Unbound up to 1.9.4. It has been declared as critical. This affects the function regional_alloc. The manipulation results in integer overflow. This vulnerability was named CVE-2019-25032. There is no available exploit. The real existence of this vulnerability is still doubted at the moment. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Unbound up to 1.9.4. It has been classified as critical. Affected is the function regional_alloc. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 04/27/2021. The advisory is available at ostif.org. This vulnerability is traded as CVE-2019-25032. Technical details are known, but there is no available exploit.

The real existence of this vulnerability is still doubted at the moment. The vulnerability scanner Nessus provides a plugin with the ID 374849 (CentOS Linux 6 [TuxCare] Security Update: unbound / unbound-devel / unbound-libs / unbound-python Multiple Vulnerabilities (CENTOS6:CLSA-2026:1793169702)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.9.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (374849). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 374849
Nessus Name: CentOS Linux 6 [TuxCare] Security Update: unbound / unbound-devel / unbound-libs / unbound-python Multiple Vulnerabilities (CENTOS6:CLSA-2026:1793169702)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Unbound 1.9.5

Timelineinfo

04/27/2021 🔍
04/27/2021 +0 days 🔍
04/27/2021 +0 days 🔍
11/02/2026 +2015 days 🔍

Sourcesinfo

Advisory: ostif.org
Status: Confirmed
Disputed: 🔍

CVE: CVE-2019-25032 (🔍)

GCVE (CVE): GCVE-0-2019-25032
GCVE (VulDB): GCVE-100-174138

Entryinfo

Created: 04/27/2021 16:33
Updated: 11/02/2026 01:26
Changes: 04/27/2021 16:33 (37), 05/02/2021 08:03 (5), 05/02/2021 08:09 (18), 08/05/2024 07:17 (18), 11/02/2026 01:26 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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