Detections
Analytics
EulerOS Virtualization 3.0.2.2 : sudo (EulerOS-SA-2020-2196)
high Nessus Plugin ID 141722
Synopsis
The remote EulerOS Virtualization host is missing multiple security updates.Description
According to the versions of the sudo package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :- 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.(CVE-2019-18634)
- In Sudo through 1.8.29, an attacker with access to a Runas ALL sudoer account can impersonate a nonexistent user by invoking sudo with a numeric uid that is not associated with any user.(CVE-2019-19232)
- In Sudo through 1.8.29, the fact that a user has been blocked (e.g., by using the ! character in the shadow file instead of a password hash) is not considered, allowing an attacker (who has access to a Runas ALL sudoer account) to impersonate any blocked user.(CVE-2019-19234)
Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Update the affected sudo packages.See Also
Plugin Details
Severity: High
ID: 141722
File Name: EulerOS_SA-2020-2196.nasl
Version: 1.8
Type: local
Family: Huawei Local Security Checks
Published: 10/21/2020
Updated: 5/11/2022
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2019-19234
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS Score Source: CVE-2019-18634
Vulnerability Information
CPE: p-cpe:/a:huawei:euleros:sudo, cpe:/o:huawei:euleros:uvp:3.0.2.2
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/uvp_version
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 10/21/2020