CVSS v3
7.8
HIGH
EPSS Score
88.6%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
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.
Active exploitation of CVE-2019-18634 has not been confirmed. The EPSS score is 88.6%, indicating the estimated probability of exploitation in the next 30 days.
CVE-2019-18634 has a CVSS v3 base score of 7.8 (HIGH severity).
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Ranked by exploit probability (EPSS).