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CVE-2021-27645

Quick assessment

Affected
n/a n/a
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 Library (aka glibc or libc6) 2.29 版本到 2.33 版本存在资源管理错误漏洞，该漏洞源于缓存守护进程(nscd)在处理网络组查找请求时，可能会由于双free而崩溃。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.37% · P29

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-27645

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The nameserver caching daemon (nscd) in the GNU C Library (aka glibc or libc6) 2.29 through 2.33, when processing a request for netgroup lookup, may crash due to a double-free, potentially resulting in degraded service or Denial of Service on the local system. This is related to netgroupcache.c.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
GNU C Library和glibc 资源管理错误漏洞
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 Library (aka glibc or libc6) 2.29 版本到 2.33 版本存在资源管理错误漏洞，该漏洞源于缓存守护进程(nscd)在处理网络组查找请求时，可能会由于双free而崩溃。
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

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2021-27645

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III. Intelligence Information for CVE-2021-27645

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Vendor Advisories for CVE-2021-27645 (1)

Mailing List Discussions for CVE-2021-27645 (3)

Other References for CVE-2021-27645 (1)

Same Patch Batch · n/a · 2021-02-24 · 10 CVEs total

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CVE-2021-3355 LightCMS v跨站脚本漏洞
CVE-2020-28599 Torsten Paul Openscad 缓冲区错误漏洞
CVE-2021-22667 Advantech BB-ESWGP506-2SFP-T 信任管理问题漏洞
CVE-2021-21973 VMware vCenter Server 代码问题漏洞
CVE-2021-21972 VMware vSphere Client 路径遍历漏洞
CVE-2021-21974 威睿 VMware ESXi 缓冲区错误漏洞
CVE-2020-11988 Apache XmlGraphics Commons 代码问题漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2021-27645

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