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I. Basic Information for CVE-2023-4806
Vulnerability Information
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Vulnerability Title
Glibc: potential use-after-free in getaddrinfo()
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw has been identified in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
glibc 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
glibc（GNU C Library）是GNU计划所实现的C标准库。 glibc存在安全漏洞，该漏洞源于当 NSS 模块仅实现 _nss_*_gethostbyname2_r 挂钩而不实现 _nss_*_gethostbyname3_r 挂钩时，getaddrinfo 函数可能会访问已释放的内存，从而导致应用程序崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Enterprise Linux 8 0:2.28-225.el8_8.6 ~ * cpe:/o:redhat:enterprise_linux:8::baseos
Red HatRed Hat Enterprise Linux 8 0:2.28-225.el8_8.6 ~ * cpe:/o:redhat:enterprise_linux:8::baseos
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support 0:2.28-189.8.el8_6 ~ * cpe:/o:redhat:rhev_hypervisor:4.4::el8
Red HatRed Hat Enterprise Linux 9 0:2.34-100.el9 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 9 0:2.34-60.el9_2.7 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 9 0:2.34-100.el9 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Enterprise Linux 9 0:2.34-60.el9_2.7 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red HatRed Hat Virtualization 4 for Red Hat Enterprise Linux 8 0:2.28-189.8.el8_6 ~ * cpe:/o:redhat:rhev_hypervisor:4.4::el8
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
II. Public POCs for CVE-2023-4806
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III. Intelligence Information for CVE-2023-4806
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IV. Related Vulnerabilities
Same product: Red Hat Enterprise Linux 8
Same vendor: Red Hat
Same weakness: CWE-416
V. Comments for CVE-2023-4806

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