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CVE-2025-6021— libxml2 安全漏洞

一分钟漏洞结论

影响对象
CVE-2025-6021
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

libxml2是GNOME开源的一个用来解析XML文档的函数库。它用C语言写成，并且能为多种语言所调用，例如C语言，C++，XSH。 libxml2存在安全漏洞，该漏洞源于xmlBuildQName函数中缓冲区大小计算的整数溢出可能导致栈缓冲区溢出，可能导致内存损坏或拒绝服务。

CVSS 7.5 · High EPSS 1.17% · P64

影响版本矩阵 31

厂商产品 版本范围状态
None None < 2.14.4 affected
Red Hat Red Hat Discovery 2 2.0.1-1754478727< * unaffected
Red Hat Red Hat Enterprise Linux 10 0:2.12.5-7.el10_0< * unaffected
Red Hat Red Hat Enterprise Linux 6 全部 unknown
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.9.1-6.el7_9.10< * unaffected
Red Hat Red Hat Enterprise Linux 8 0:2.9.7-21.el8_10.1< * unaffected
0:2.9.7-21.el8_10.1< * unaffected
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:2.9.7-9.el8_2.3< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.9.7-9.el8_4.6< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.9.7-9.el8_4.6< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.9.7-13.el8_6.10< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:2.9.7-13.el8_6.10< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:2.9.7-13.el8_6.10< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.9.7-16.el8_8.9< * unaffected
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.9.7-16.el8_8.9< * unaffected
Red Hat Red Hat Enterprise Linux 9 0:2.9.13-10.el9_6< * unaffected
0:2.9.13-10.el9_6< * unaffected
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:2.9.13-1.el9_0.5< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:2.9.13-3.el9_2.7< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:2.9.13-10.el9_4< * unaffected
Red Hat Red Hat Hardened Images 2.15.2-0.3.hum1< * unaffected
Red Hat Red Hat Insights proxy 1.5 1.5.5-1754504343< * unaffected
Red Hat Red Hat JBoss Core Services 2.4.62.SP2 全部 unaffected
Red Hat Red Hat OpenShift Container Platform 4.12 412.86.202509030110-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.13 413.92.202509030117-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.14 414.92.202508041909-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.15 415.92.202508192014-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.16 416.94.202508050040-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.17 417.94.202508141510-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.18 418.94.202508060022-0< * unaffected
Red Hat Red Hat OpenShift Container Platform 4.19 4.19.9.6.202507230107-0< * unaffected

一、 漏洞 CVE-2025-6021 基础信息

漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
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Vulnerability Title
Libxml2: integer overflow in xmlbuildqname() leads to stack buffer overflow in libxml2
来源: CVE Program / CVE List V5
Vulnerability Description
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.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
来源: CVE Program / CVE List V5
Vulnerability Title
libxml2 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
libxml2是GNOME开源的一个用来解析XML文档的函数库。它用C语言写成，并且能为多种语言所调用，例如C语言，C++，XSH。 libxml2存在安全漏洞，该漏洞源于xmlBuildQName函数中缓冲区大小计算的整数溢出可能导致栈缓冲区溢出，可能导致内存损坏或拒绝服务。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
- - 0 ~ 2.14.4 -
Red Hat Red Hat Enterprise Linux 10 0:2.12.5-7.el10_0 ~ * cpe:/o:redhat:enterprise_linux:10.0
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.9.1-6.el7_9.10 ~ * cpe:/o:redhat:rhel_els:7
Red Hat Red Hat Enterprise Linux 8 0:2.9.7-21.el8_10.1 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 0:2.9.7-21.el8_10.1 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:2.9.7-9.el8_2.3 ~ * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.9.7-9.el8_4.6 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On 0:2.9.7-9.el8_4.6 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.9.7-13.el8_6.10 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:2.9.7-13.el8_6.10 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:2.9.7-13.el8_6.10 ~ * cpe:/a:redhat:rhel_aus:8.6::appstream
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 0:2.9.7-16.el8_8.9 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 0:2.9.7-16.el8_8.9 ~ * cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat Red Hat Enterprise Linux 9 0:2.9.13-10.el9_6 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9 0:2.9.13-10.el9_6 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:2.9.13-1.el9_0.5 ~ * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:2.9.13-3.el9_2.7 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:2.9.13-10.el9_4 ~ * cpe:/a:redhat:rhel_eus:9.4::appstream
Red Hat Red Hat JBoss Core Services 2.4.62.SP2 - cpe:/a:redhat:jboss_core_services:1
Red Hat Red Hat OpenShift Container Platform 4.12 412.86.202509030110-0 ~ * cpe:/a:redhat:openshift:4.12::el8
Red Hat Red Hat OpenShift Container Platform 4.13 413.92.202509030117-0 ~ * cpe:/a:redhat:openshift:4.13::el9
Red Hat Red Hat OpenShift Container Platform 4.14 414.92.202508041909-0 ~ * cpe:/a:redhat:openshift:4.14::el8
Red Hat Red Hat OpenShift Container Platform 4.15 415.92.202508192014-0 ~ * cpe:/a:redhat:openshift:4.15::el9
Red Hat Red Hat OpenShift Container Platform 4.16 416.94.202508050040-0 ~ * cpe:/a:redhat:openshift:4.16::el9
Red Hat Red Hat OpenShift Container Platform 4.17 417.94.202508141510-0 ~ * cpe:/a:redhat:openshift:4.17::el9
Red Hat Red Hat OpenShift Container Platform 4.18 418.94.202508060022-0 ~ * cpe:/a:redhat:openshift:4.18::el9
Red Hat Red Hat OpenShift Container Platform 4.19 4.19.9.6.202507230107-0 ~ * cpe:/a:redhat:openshift:4.19::el9
Red Hat Red Hat Discovery 2 2.0.1-1754478727 ~ * cpe:/a:redhat:discovery:2::el9
Red Hat Red Hat Hardened Images 2.15.2-0.3.hum1 ~ * cpe:/a:redhat:hummingbird:1
Red Hat Red Hat Insights proxy 1.5 1.5.5-1754504343 ~ * cpe:/a:redhat:insights_proxy:1.5::el9

二、漏洞 CVE-2025-6021 的公开POC

# POC 描述 源链接 神龙链接
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三、漏洞 CVE-2025-6021 的情报信息

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CVE-2025-6021 厂商安全公告 (17)

CVE-2025-6021 其他参考 (1)

IV. Related Vulnerabilities

Same weakness: CWE-787

V. Comments for CVE-2025-6021

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