CVE•Published 2020-01-29•1 article on news•7 live references•NVD data

CVE-2019-18634

Vulnerability data via CVEDB (Shodan)

CVSS v3.1

7.8

HIGH

EPSS percentile

Exploit Prediction Scoring System · top 3% of all CVEs

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.

Timeline

Published 2020-01-29

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common). Live host counts are a Premium feature.

Shodan · vuln tag

vuln:CVE-2019-18634

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product + version

product:"Sudo Project Sudo" version:"1.7.1"

Version-pinned fingerprint from NVD's first vulnerable CPE.

Shodan · banner/body mention

http.html:"Sudo"

HTTP body or banner mentions "Sudo" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2019-18634