libxml2 up to 2.9.10 XML Document null pointer dereference

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.4$0-$5k0.00

A vulnerability classified as problematic was found in libxml2 up to 2.9.10 (Document Processing Software). This vulnerability affects some unknown functionality of the component XML Document Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-476. As an impact it is known to affect availability. CVE summarizes:

A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability.

The weakness was published 05/15/2021. The advisory is shared for download at lists.debian.org. This vulnerability was named CVE-2021-3537 since 05/05/2021. The attack can only be initiated within the local network. A single authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 2.9.11 eliminates this vulnerability.

Productinfoedit

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Name

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2infoedit

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

Exploitinginfoedit

Class: Denial of service
CWE: CWE-476
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: libxml2 2.9.11

Timelineinfoedit

05/05/2021 CVE assigned
05/15/2021 +10 days Advisory disclosed
05/15/2021 +0 days VulDB entry created
05/20/2021 +5 days VulDB last update

Sourcesinfoedit

Advisory: lists.debian.org
Status: Confirmed

CVE: CVE-2021-3537 (🔒)

Entryinfoedit

Created: 05/15/2021 06:39 PM
Updated: 05/20/2021 03:16 AM
Changes: (5) source_cve_assigned source_cve_nvd_summary vulnerability_cvss2_vuldb_tempscore vulnerability_cvss3_vuldb_tempscore vulnerability_cvss3_meta_tempscore
Complete: 🔍

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