Detections
Analytics
CentOS 9 : libxml2-2.9.13-10.el9
critical Nessus Plugin ID 242071
Language:
Synopsis
The remote CentOS host is missing one or more security updates for libxml2.Description
The remote CentOS Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the libxml2-2.9.13-10.el9 build changelog.- A vulnerability was found in libxml2. Processing certain sch:name elements from the input XML file can trigger a memory corruption issue. This flaw allows an attacker to craft a malicious XML input file that can lead libxml to crash, resulting in a denial of service or other possible undefined behavior due to sensitive data being corrupted in memory. (CVE-2025-49796)
- A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the <sch:name path=.../> schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors. (CVE-2025-49794)
- A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input. (CVE-2025-6021)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the CentOS 9 Stream libxml2 package.See Also
https://kojihub.stream.centos.org/koji/buildinfo?buildID=79800
Plugin Details
Severity: Critical
ID: 242071
File Name: centos9_libxml2-2_9_13-10_79800.nasl
Version: 1.1
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 7/14/2025
Updated: 7/14/2025
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: High
Base Score: 9.4
Temporal Score: 7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:C
CVSS Score Source: CVE-2025-49796
CVSS v3
Risk Factor: Critical
Base Score: 9.1
Temporal Score: 7.9
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:centos:centos:libxml2, p-cpe:/a:centos:centos:libxml2-devel, p-cpe:/a:centos:centos:libxml2-static, p-cpe:/a:centos:centos:python3-libxml2, cpe:/a:centos:centos:9
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/CentOS/release, Host/CentOS/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 7/8/2025
Vulnerability Publication Date: 6/12/2025