VDB-209227 · CVE-2022-38178 · DLA 3138-1

ISC BIND up to 9.19.4 memory leak

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.7	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in ISC BIND up to 9.19.4. The impacted element is an unknown function. This manipulation causes memory leak. This vulnerability is tracked as CVE-2022-38178. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in ISC BIND up to 9.19.4 (Domain Name Software) and classified as problematic. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. The summary by CVE is:

By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.

The weakness was disclosed 09/21/2022. It is possible to read the advisory at kb.isc.org. This vulnerability is known as CVE-2022-38178 since 08/12/2022. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 239987 (TencentOS Server 4: bind (TSSA-2024:0612)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.16.33, 9.16.33-S1, 9.18.7 or 9.19.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (239987). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Domain Name Software

Vendor

Name

BIND

Version

License

open-source

Website

Vendor: https://www.isc.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (Internet Systems Consortium (ISC)): 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 239987
Nessus Name: TencentOS Server 4: bind (TSSA-2024:0612)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: BIND 9.16.33/9.16.33-S1/9.18.7/9.19.5

Timelineinfo

08/12/2022 🔍
09/21/2022 +40 days 🔍
09/21/2022 +0 days 🔍
06/17/2025 +1000 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: DLA 3138-1
Status: Confirmed

CVE: CVE-2022-38178 (🔍)
GCVE (CVE): GCVE-0-2022-38178
GCVE (VulDB): GCVE-100-209227

Entryinfo

Created: 09/21/2022 15:10
Updated: 06/17/2025 17:43
Changes: 09/21/2022 15:10 (40), 10/21/2022 18:16 (1), 10/21/2022 18:23 (12), 05/28/2025 23:07 (26), 06/17/2025 17:43 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.