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CVE-2019-18634

Quick assessment

Affected
n/a n/a
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sudo是一款使用于类Unix系统的，允许用户通过安全的方式使用特殊的权限执行命令的程序。 Sudo 1.8.26之前版本中存在缓冲区错误漏洞，该漏洞源于程序没有正确检查边界。本地攻击者可借助特制字符串利用该漏洞在系统上执行任意代码。

AI Predicted 7.8 Difficulty: Moderate EPSS 19.43% · P97

Public Exploits 2

ExploitDB · 2 EDB-47995 [dos] EDB-48052 [local]
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I. Basic Information for CVE-2019-18634

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.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
Sudo 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sudo是一款使用于类Unix系统的，允许用户通过安全的方式使用特殊的权限执行命令的程序。 Sudo 1.8.26之前版本中存在缓冲区错误漏洞，该漏洞源于程序没有正确检查边界。本地攻击者可借助特制字符串利用该漏洞在系统上执行任意代码。
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)

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Affected Products

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

II. Public POCs for CVE-2019-18634

# POC Description Source Link Shenlong Link
1 A functional exploit for CVE-2019-18634, a BSS overflow in sudo's pwfeedback feature that allows for for privesc https://github.com/Plazmaz/CVE-2019-18634 POC Details
2 Proof of Concept for CVE-2019-18634 https://github.com/saleemrashid/sudo-cve-2019-18634 POC Details
3 An Python Exploit for Sudo vulnerability CVE-2019-18634 https://github.com/N1et/CVE-2019-18634 POC Details
4 exploit for sudo CVE-2019-18634 https://github.com/ptef/CVE-2019-18634 POC Details
5 None https://github.com/edsonjt81/sudo-cve-2019-18634 POC Details
6 exploit https://github.com/Y3A/CVE-2019-18634 POC Details
7 My n-day exploit for CVE-2019-18634 (local privilege escalation) https://github.com/aesophor/CVE-2019-18634 POC Details
8 None https://github.com/TheJoyOfHacking/saleemrashid-sudo-cve-2019-18634 POC Details
9 None https://github.com/DDayLuong/CVE-2019-18634 POC Details
10 A reproduction of CVE-2019-18634, sudo privilege escalation with buffer overflow. https://github.com/chanbakjsd/CVE-2019-18634 POC Details
11 exploit https://github.com/paras1te-x/CVE-2019-18634 POC Details
12 This repo contains both the exploit and the explaination of how this vulnerability is exploited https://github.com/l0w3/CVE-2019-18634 POC Details
13 None https://github.com/ngyinkit/cve-2019-18634 POC Details
14 None https://github.com/letsr00t/-CVE-2019-18634-sudo-pwfeedback POC Details
15 analysis of the sudo buffer overflow affect sudo version <1.8.26 and how to use GCC to compile publicly availible exploits https://github.com/CyrusRazavi/CVE-2019-18634- POC Details
16 analysis of the sudo buffer overflow affect sudo version <1.8.26 and how to use GCC to compile publicly availible exploits https://github.com/CyrusRazavi/CVE-2019-18634-writeup POC Details
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III. Intelligence Information for CVE-2019-18634

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Vendor Advisories for CVE-2019-18634 (10)

Exploits & Public PoCs for CVE-2019-18634 (2)

Mailing List Discussions for CVE-2019-18634 (12)

Other References for CVE-2019-18634 (2)

Same Patch Batch · n/a · 2020-01-29 · 28 CVEs total

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CVE-2019-20217 D-Link DIR-859 操作系统命令注入漏洞
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CVE-2019-7654 Wowza Media Systems Streaming Engine 跨站请求伪造漏洞
CVE-2019-7656 Wowza Media Systems Streaming Engine 跨站脚本漏洞
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CVE-2020-7247 Openbsd Opensmtpd代码问题漏洞
CVE-2020-8416 BearFTP 资源管理错误漏洞
CVE-2013-2567 Zavio IP Cameras 信任管理问题漏洞
CVE-2013-2568 Zavio IP Cameras 操作系统命令注入漏洞
CVE-2013-2569 Zavio IP Cameras 授权问题漏洞
CVE-2020-8438 Ruckus ZoneFlex R500 操作系统命令注入漏洞
CVE-2013-2570 Zavio IP Cameras 操作系统命令注入漏洞
CVE-2013-2572 多款TP-LINK产品信任管理问题漏洞
CVE-2013-2573 TP-LINK IP Cameras TL-SC 3130G、3171G和4171G 操作系统命令注入漏洞
CVE-2020-8432 Das U-Boot 资源管理错误漏洞
CVE-2013-2574 FOSCAM IP-Camera 安全漏洞

Showing top 20 of 28 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

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

V. Comments for CVE-2019-18634

Anonymous User
2026-01-15 06:08:55

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