CVE-2019-18634high
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
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
http://packetstormsecurity.com/files/156174/Slackware-Security-Advisory-sudo-Updates.html
http://packetstormsecurity.com/files/156189/Sudo-1.8.25p-Buffer-Overflow.html
http://seclists.org/fulldisclosure/2020/Jan/40
http://www.openwall.com/lists/oss-security/2020/01/30/6
http://www.openwall.com/lists/oss-security/2020/01/31/1
http://www.openwall.com/lists/oss-security/2020/02/05/2
http://www.openwall.com/lists/oss-security/2020/02/05/5
https://access.redhat.com/errata/RHSA-2020:0487
https://access.redhat.com/errata/RHSA-2020:0509
https://lists.debian.org/debian-lts-announce/2020/02/msg00002.html
https://seclists.org/bugtraq/2020/Feb/2
https://seclists.org/bugtraq/2020/Feb/3
https://seclists.org/bugtraq/2020/Jan/44
https://security.netapp.com/advisory/ntap-20200210-0001/
https://support.apple.com/kb/HT210919
https://usn.ubuntu.com/4263-1/
https://usn.ubuntu.com/4263-2/
https://www.debian.org/security/2020/dsa-4614
Details
Source: MITRE
Published: 2020-01-29
Updated: 2020-02-07
Type: CWE-787
Risk Information
CVSS v2
Base Score: 4.6
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 3.9
Severity: MEDIUM
CVSS v3
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH
Vulnerable Software
Configuration 1
OR
Configuration 2
OR
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 147665 | EulerOS Virtualization 2.9.0 : sudo (EulerOS-SA-2021-1657) | Nessus | Huawei Local Security Checks | high |
| 147565 | EulerOS Virtualization 2.9.1 : sudo (EulerOS-SA-2021-1627) | Nessus | Huawei Local Security Checks | high |
| 147406 | NewStart CGSL MAIN 4.06 : sudo Multiple Vulnerabilities (NS-SA-2021-0001) | Nessus | NewStart CGSL Local Security Checks | high |
| 145976 | CentOS 8 : sudo (CESA-2020:0487) | Nessus | CentOS Local Security Checks | high |
| 143914 | NewStart CGSL CORE 5.05 / MAIN 5.05 : sudo Vulnerability (NS-SA-2020-0096) | Nessus | NewStart CGSL Local Security Checks | high |
| 141878 | EulerOS 2.0 SP9 : sudo (EulerOS-SA-2020-2238) | Nessus | Huawei Local Security Checks | high |
| 141764 | EulerOS 2.0 SP9 : sudo (EulerOS-SA-2020-2237) | Nessus | Huawei Local Security Checks | high |
| 141722 | EulerOS Virtualization 3.0.2.2 : sudo (EulerOS-SA-2020-2196) | Nessus | Huawei Local Security Checks | high |
| 140284 | NewStart CGSL MAIN 4.05 : sudo Vulnerability (NS-SA-2020-0047) | Nessus | NewStart CGSL Local Security Checks | high |
| 138004 | EulerOS Virtualization 3.0.6.0 : sudo (EulerOS-SA-2020-1785) | Nessus | Huawei Local Security Checks | high |
| 137504 | EulerOS 2.0 SP2 : sudo (EulerOS-SA-2020-1662) | Nessus | Huawei Local Security Checks | high |
| 136908 | NewStart CGSL CORE 5.04 / MAIN 5.04 : sudo Vulnerability (NS-SA-2020-0025) | Nessus | NewStart CGSL Local Security Checks | high |
| 136267 | EulerOS Virtualization for ARM 64 3.0.2.0 : sudo (EulerOS-SA-2020-1564) | Nessus | Huawei Local Security Checks | high |
| 135564 | EulerOS 2.0 SP3 : sudo (EulerOS-SA-2020-1435) | Nessus | Huawei Local Security Checks | high |
| 135136 | EulerOS Virtualization for ARM 64 3.0.6.0 : sudo (EulerOS-SA-2020-1349) | Nessus | Huawei Local Security Checks | high |
| 134682 | Amazon Linux AMI : sudo (ALAS-2020-1356) | Nessus | Amazon Linux Local Security Checks | high |
| 134679 | Amazon Linux 2 : sudo (ALAS-2020-1404) | Nessus | Amazon Linux Local Security Checks | high |
| 134589 | GLSA-202003-12 : sudo: Multiple vulnerabilities | Nessus | Gentoo Local Security Checks | high |
| 134385 | CentOS 6 : sudo (CESA-2020:0726) | Nessus | CentOS Local Security Checks | high |
| 134346 | Scientific Linux Security Update : sudo on SL6.x i386/x86_64 (20200305) | Nessus | Scientific Linux Local Security Checks | high |
| 134341 | Oracle Linux 6 : sudo (ELSA-2020-0726) | Nessus | Oracle Linux Local Security Checks | high |
| 134271 | RHEL 6 : sudo (RHSA-2020:0726) | Nessus | Red Hat Local Security Checks | high |
| 134253 | Fedora 31 : sudo (2020-8b563bc5f4) | Nessus | Fedora Local Security Checks | high |
| 134073 | openSUSE Security Update : sudo (openSUSE-2020-244) | Nessus | SuSE Local Security Checks | high |
| 134015 | EulerOS 2.0 SP8 : sudo (EulerOS-SA-2020-1181) | Nessus | Huawei Local Security Checks | high |
| 133936 | EulerOS 2.0 SP5 : sudo (EulerOS-SA-2020-1135) | Nessus | Huawei Local Security Checks | high |
| 133833 | SUSE SLES12 Security Update : sudo (SUSE-SU-2020:0409-1) | Nessus | SuSE Local Security Checks | high |
| 133832 | SUSE SLED15 / SLES15 Security Update : sudo (SUSE-SU-2020:0408-1) | Nessus | SuSE Local Security Checks | high |
| 133831 | SUSE SLES12 Security Update : sudo (SUSE-SU-2020:0407-1) | Nessus | SuSE Local Security Checks | high |
| 133830 | SUSE SLED12 / SLES12 Security Update : sudo (SUSE-SU-2020:0406-1) | Nessus | SuSE Local Security Checks | high |
| 133790 | SUSE SLES12 Security Update : sudo (SUSE-SU-2020:0390-1) | Nessus | SuSE Local Security Checks | high |
| 133789 | Scientific Linux Security Update : sudo on SL7.x x86_64 (20200218) | Nessus | Scientific Linux Local Security Checks | high |
| 133783 | RHEL 7 : sudo (RHSA-2020:0540) | Nessus | Red Hat Local Security Checks | high |
| 133781 | Oracle Linux 7 : sudo (ELSA-2020-0540) | Nessus | Oracle Linux Local Security Checks | high |
| 133770 | CentOS 7 : sudo (CESA-2020:0540) | Nessus | CentOS Local Security Checks | high |
| 133713 | RHEL 8 : sudo (RHSA-2020:0509) | Nessus | Red Hat Local Security Checks | high |
| 133712 | RHEL 8 : sudo (RHSA-2020:0487) | Nessus | Red Hat Local Security Checks | high |
| 133531 | macOS 10.15.x < 10.15.3 / 10.14.x < 10.14.6 / 10.13.x < 10.13.6 | Nessus | MacOS X Local Security Checks | critical |
| 133449 | Ubuntu 16.04 LTS / 18.04 LTS / 19.10 : sudo vulnerability (USN-4263-1) | Nessus | Ubuntu Local Security Checks | high |
| 133437 | Slackware 14.0 / 14.1 / 14.2 / current : sudo (SSA:2020-031-01) | Nessus | Slackware Local Security Checks | high |
| 133433 | FreeBSD : sudo -- Potential bypass of Runas user restrictions (b4e5f782-442d-11ea-9ba9-206a8a720317) | Nessus | FreeBSD Local Security Checks | high |
| 133417 | Debian DSA-4614-1 : sudo - security update | Nessus | Debian Local Security Checks | high |
| 133414 | Debian DLA-2094-1 : sudo security update | Nessus | Debian Local Security Checks | high |