Zabbix up to 7.0.2 curl_write_cb unchecked return value to null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Zabbix up to 7.0.2. It has been declared as problematic. This affects the function curl_write_cb. Such manipulation leads to unchecked return value to null pointer dereference. This vulnerability is referenced as CVE-2024-42328. The attack can only be performed from a local environment. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Zabbix up to 7.0.2 and classified as problematic. Affected by this issue is the function curl_write_cb. The manipulation with an unknown input leads to a unchecked return value to null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-690. The product does not check for an error after calling a function that can return with a NULL pointer if the function fails, which leads to a resultant NULL pointer dereference. Impacted is availability. CVE summarizes:

When the webdriver for the Browser object downloads data from a HTTP server, the data pointer is set to NULL and is allocated only in curl_write_cb when receiving data. If the server's response is an empty document, then wd->data in the code below will remain NULL and an attempt to read from it will result in a crash.

The advisory is available at support.zabbix.com. This vulnerability is handled as CVE-2024-42328 since 07/30/2024. The exploitation is known to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit.

Upgrading to version 7.0.3rc1 eliminates this vulnerability.

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

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 3.3
CNA Vector (Zabbix): 🔍

CVSSv2info

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

Exploitinginfo

Class: Unchecked return value to null pointer dereference
CWE: CWE-690 / CWE-395
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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: Zabbix 7.0.3rc1

Timelineinfo

07/30/2024 🔍
11/27/2024 +120 days 🔍
11/27/2024 +0 days 🔍
10/08/2025 +315 days 🔍

Sourcesinfo

Advisory: support.zabbix.com
Status: Confirmed

CVE: CVE-2024-42328 (🔍)
GCVE (CVE): GCVE-0-2024-42328
GCVE (VulDB): GCVE-100-286250

Entryinfo

Created: 11/27/2024 15:17
Updated: 10/08/2025 19:02
Changes: 11/27/2024 15:17 (63), 11/27/2024 16:56 (1), 10/08/2025 19:02 (11)
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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