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CVE-2023-5156— Glibc: dos due to memory leak in getaddrinfo.c

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 6
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GNU C Library（glibc，libc6）是一种按照LGPL许可协议发布的开源免费的C语言编译程序。 GNU C存在安全漏洞，该漏洞源于存在内存泄露漏洞。

CVSS 7.5 · High EPSS 1.58% · P75

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-5156

Vulnerability Information
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Vulnerability Title
Glibc: dos due to memory leak in getaddrinfo.c
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a memory leak, which may result in an application crash.
Source: 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
Source: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: CVE Program / CVE List V5
Vulnerability Title
GNU C Library 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU C Library（glibc，libc6）是一种按照LGPL许可协议发布的开源免费的C语言编译程序。 GNU C存在安全漏洞，该漏洞源于存在内存泄露漏洞。
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

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2023-5156

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III. Intelligence Information for CVE-2023-5156

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Vendor Advisories for CVE-2023-5156 (2)

Mailing List Discussions for CVE-2023-5156 (4)

Other References for CVE-2023-5156 (2)

Same Patch Batch · Red Hat · 2023-09-25 · 6 CVEs total

CVE-2022-4137 8.1 HIGH Keycloak: reflected xss attack
CVE-2022-4318 7.8 HIGH Cri-o: /etc/passwd tampering privesc
CVE-2022-4244 7.5 HIGH Codehaus-plexus: directory traversal
CVE-2023-42753 7.0 HIGH Kernel: netfilter: potential slab-out-of-bound access due to integer underflow
CVE-2022-4245 4.3 MEDIUM Codehaus-plexus: xml external entity (xxe) injection

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 6
Same vendor: Red Hat
Same weakness: CWE-401

V. Comments for CVE-2023-5156

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