libxml2 xmlSchemaFixupComplexType null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in libxml2. This affects the function xmlSchemaFixupComplexType. The manipulation results in null pointer dereference. This vulnerability was named CVE-2023-28484. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in libxml2 (Document Processing Software) (affected version not known). Affected is the function xmlSchemaFixupComplexType. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability.

The weakness was presented 04/14/2023. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2023-28484 since 03/16/2023. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236630 (Alibaba Cloud Linux 3 : 0111: libxml2 (ALINUX3-SA-2023:0111)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (236630). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 5.0

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 236630
Nessus Name: Alibaba Cloud Linux 3 : 0111: libxml2 (ALINUX3-SA-2023:0111)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/16/2023 🔍
04/14/2023 +28 days 🔍
04/14/2023 +0 days 🔍
05/31/2025 +778 days 🔍

Sourcesinfo

Advisory: 491
Status: Not defined

CVE: CVE-2023-28484 (🔍)
GCVE (CVE): GCVE-0-2023-28484
GCVE (VulDB): GCVE-100-225948

Entryinfo

Created: 04/14/2023 11:26
Updated: 05/31/2025 02:18
Changes: 04/14/2023 11:26 (36), 05/03/2023 08:13 (2), 05/03/2023 08:17 (1), 05/19/2025 20:54 (17), 05/31/2025 02:18 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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