Palo Alto PAN-OS up to 9.1.2 dnsproxyd integer underflow

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Palo Alto PAN-OS up to 9.1.2. It has been declared as problematic. Affected is an unknown function of the component dnsproxyd. Such manipulation leads to integer underflow. This vulnerability is uniquely identified as CVE-2020-2031. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Palo Alto PAN-OS up to 9.1.2 (Firewall Software). Affected by this issue is some unknown processing of the component dnsproxyd. The manipulation with an unknown input leads to a integer underflow vulnerability. Using CWE to declare the problem leads to CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. Impacted is availability. CVE summarizes:

An integer underflow vulnerability in the dnsproxyd component of the PAN-OS management interface allows authenticated administrators to issue a command from the command line interface that causes the component to stop responding. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. This issue impacts: PAN-OS 9.1 versions earlier than PAN-OS 9.1.3. This issue does not impact PAN-OS 8.1, PAN-OS 9.0, or Prisma Access services.

The weakness was disclosed 07/08/2020 (Website). The advisory is shared for download at security.paloaltonetworks.com. This vulnerability is handled as CVE-2020-2031 since 12/04/2019. The attack may be launched remotely. Additional levels of successful authentication are required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 9.1.3 eliminates this vulnerability.

The entries VDB-157773, VDB-157771 and VDB-157770 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.7

VulDB Base Score: 2.7
VulDB Temp Score: 2.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.9
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Integer underflow
CWE: CWE-191 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PAN-OS 9.1.3

Timelineinfo

12/04/2019 🔍
07/08/2020 +217 days 🔍
07/09/2020 +1 days 🔍
10/29/2020 +112 days 🔍

Sourcesinfo

Vendor: paloaltonetworks.com

Advisory: security.paloaltonetworks.com
Status: Not defined

CVE: CVE-2020-2031 (🔍)
GCVE (CVE): GCVE-0-2020-2031
GCVE (VulDB): GCVE-100-157772
See also: 🔍

Entryinfo

Created: 07/09/2020 08:13
Updated: 10/29/2020 09:25
Changes: 07/09/2020 08:13 (41), 07/09/2020 08:18 (12), 10/29/2020 09:25 (1)
Complete: 🔍
Cache ID: 216::103

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