VulnSocial

CVE-2019-18634General(debian / debian_linux)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.5/ 10 priority

Sources & remediation

Exploit / PoC references
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-787

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • debian_linux
  • sudo

Threat summary

  • 3 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • General: 3 classified signals
  • Peaked 2d ago at 1 mentions (2026-02-06); latest day: 1
  • 3 total mentions across 3 days

Affected systems

Vendors
debiansudo_project
Products
debian_linuxsudo

3 versions affected across 2 products

Deep dive

Activity timeline3 mentions / 3d
00111Mentions · 2026-02-06: 1Mentions · 2026-04-03: 1Mentions · 2026-04-07: 1Technical Details · 2026-04-03: 102-0604-0304-07
Signal classification1 categories
General
3100.0%
Referenced assets3 URLs
Full discourse3 posts
  • Sun4lower@LittleSun4lower
    General

    I just completed Sudo Buffer Overflow room on TryHackMe! A tutorial room exploring CVE-2019-18634 in the Unix Sudo Program. Room Two in the SudoVulns Series https://tryhackme.com/room/sudovulnsbof?utm_campaign=social_share&utm_medium=social&utm_content=room&utm_source=twitter&sharerId=66457951599dd28bfb000ded #tryhackme via @tryhackme #tryhackme #learning #consistency

    Post summary

    The user highlights completion of a tutorial room about CVE‑2019‑18634 but offers no PoC, exploit, patch, or technical details.

    0000029
    5 followersView on X
  • VibeQuest@BaraniBr443638
    General

    I just completed Sudo Buffer Overflow room on TryHackMe! A tutorial room exploring CVE-2019-18634 in the Unix Sudo Program. Room Two in the SudoVulns Series https://tryhackme.com/room/sudovulnsbof?utm_campaign=social_share&utm_medium=social&utm_content=room&utm_source=twitter&sharerId=61eac99b5af18f0042650fad #tryhackme via @tryhackme

    Post summary

    The message describes completing an educational TryHackMe room that explores the CVE‑2019‑18634 buffer overflow in sudo, without providing PoC, exploit code, or patch details.

    0000035
    6 followersView on X
  • Jayesh Verma@JayeshV88153533
    General

    I just completed Sudo Buffer Overflow room on TryHackMe! A tutorial room exploring CVE-2019-18634 in the Unix Sudo Program. Room Two in the SudoVulns Series https://tryhackme.com/room/sudovulnsbof?utm_campaign=social_share&utm_medium=social&utm_content=room&utm_source=twitter&sharerId=684d724b80fe1af75347f3e4 #tryhackme via @tryhackme

    Post summary

    The user announces completion of a TryHackMe tutorial room that covers CVE‑2019‑18634, but no technical, exploit, or mitigation details are supplied.

    0000043
    16 followersView on X
CPE platform detail4 entries

4 of 4 entries

PartVendorProductVersionTarget SWTarget HW
OSdebiandebian_linux10.0--
OSdebiandebian_linux8.0--
OSdebiandebian_linux9.0--
Appsudo_projectsudo---

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