National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-18634 Detail

Current 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:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.8 HIGH
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00029.html
http://packetstormsecurity.com/files/156174/Slackware-Security-Advisory-sudo-Updates.html Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/156189/Sudo-1.8.25p-Buffer-Overflow.html Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2020/Jan/40 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/30/6 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/31/1 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/02/05/2 Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/02/05/5 Exploit Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0487
https://access.redhat.com/errata/RHSA-2020:0509
https://access.redhat.com/errata/RHSA-2020:0540
https://access.redhat.com/errata/RHSA-2020:0726
https://lists.debian.org/debian-lts-announce/2020/02/msg00002.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I6TKF36KOQUVJNBHSVJFA7BU3CCEYD2F/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IY6DZ7WMDKU4ZDML6MJLDAPG42B5WVUC/
https://seclists.org/bugtraq/2020/Feb/2 Mailing List Third Party Advisory
https://seclists.org/bugtraq/2020/Feb/3 Mailing List Third Party Advisory
https://seclists.org/bugtraq/2020/Jan/44 Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202003-12
https://security.netapp.com/advisory/ntap-20200210-0001/
https://support.apple.com/kb/HT210919 Third Party Advisory
https://usn.ubuntu.com/4263-1/
https://usn.ubuntu.com/4263-2/
https://www.debian.org/security/2020/dsa-4614 Third Party Advisory
https://www.sudo.ws/alerts/pwfeedback.html Exploit Vendor Advisory
https://www.sudo.ws/security.html Vendor Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
1.7.1
Up to (excluding)
1.8.26

Configuration 2 ( hide )
 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

24 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-18634
NVD Published Date:
01/29/2020
NVD Last Modified:
02/07/2020