Detections
Analytics
CVE-2019-18634
high
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.
References
https://www.debian.org/security/2020/dsa-4614
https://usn.ubuntu.com/4263-2/
https://usn.ubuntu.com/4263-1/
https://support.apple.com/kb/HT210919
https://security.gentoo.org/glsa/202003-12
https://seclists.org/bugtraq/2020/Jan/44
https://seclists.org/bugtraq/2020/Feb/3
https://seclists.org/bugtraq/2020/Feb/2
https://lists.debian.org/debian-lts-announce/2020/02/msg00002.html
https://access.redhat.com/errata/RHSA-2020:0726
https://access.redhat.com/errata/RHSA-2020:0540
https://access.redhat.com/errata/RHSA-2020:0509
https://access.redhat.com/errata/RHSA-2020:0487
http://www.openwall.com/lists/oss-security/2020/02/05/2
http://www.openwall.com/lists/oss-security/2020/01/31/1
http://www.openwall.com/lists/oss-security/2020/01/30/6
http://seclists.org/fulldisclosure/2020/Jan/40
http://packetstormsecurity.com/files/156189/Sudo-1.8.25p-Buffer-Overflow.html
http://packetstormsecurity.com/files/156174/Slackware-Security-Advisory-sudo-Updates.html
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00029.html