Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2021-3999

Quick assessment

Affected
n/a glibc
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.

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glibc: getcwd()中的Off-by-one缓冲区溢出下溢。

AI Predicted 7.8 Difficulty: Hard EPSS 0.75% · P53
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-3999

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in glibc. An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
Off-by-one错误
Source: CVE Program / CVE List V5
Vulnerability Title
glibc 安全漏洞
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glibc: getcwd()中的Off-by-one缓冲区溢出下溢。
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
- glibc Fixed in glibc v2.31 and above. -

II. Public POCs for CVE-2021-3999

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-3999

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-3999 (4)

Mailing List Discussions for CVE-2021-3999 (2)

Other References for CVE-2021-3999 (2)

Same Patch Batch · n/a · 2022-08-24 · 40 CVEs total

CVE-2022-25903 7.5 HIGH Denial of Service (DoS)
CVE-2022-24375 7.5 HIGH Denial of Service (DoS)
CVE-2021-4158 QEMU 代码问题漏洞
CVE-2022-20122 Google Android 资源管理错误漏洞
CVE-2021-4178 Kubernetes 代码问题漏洞
CVE-2021-4209 GnuTLS 代码问题漏洞
CVE-2021-4213 Linux jss 安全漏洞
CVE-2021-4218 Linux kernel 安全漏洞
CVE-2021-4217 Info-ZIP UnZip 代码问题漏洞
CVE-2021-4122 cryptsetup 数据伪造问题漏洞
CVE-2021-4125 Red Hat OpenShift 代码问题漏洞
CVE-2021-4142 Red Hat Satellite 授权问题漏洞
CVE-2021-4155 Red Hat Enterprise Linux 权限许可和访问控制问题漏洞
CVE-2021-0947 Google Android 缓冲区错误漏洞
CVE-2021-4159 Linux kernel 安全漏洞
CVE-2021-4041 Ansible-Runner 操作系统命令注入漏洞
CVE-2021-4040 Red Hat AMQ Broker 缓冲区错误漏洞
CVE-2022-37181 72crm 代码问题漏洞
CVE-2022-37178 72crm SQL注入漏洞
CVE-2018-14520 Kirby 跨站脚本漏洞

Showing top 20 of 40 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: glibc
Same vendor: n/a
Same weakness: CWE-193

V. Comments for CVE-2021-3999

No comments yet

Leave a comment