Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
Updated: 30.01.2020
Changed bulletin status to patched.
EUVDB-ID: #VU23782
Risk: Low
CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2019-19234
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to impersonate other users on the system.
The vulnerability exists due to incorrect handling of the blocked users (e.g., by using the ! character in the shadow file instead of a password hash) in sudo. A local user with access to a Runas ALL sudoer account can impersonate blocked users.
Install update from vendor's website.
Vulnerable software versionsSudo: 1.8.0 - 1.8.29
CPE2.3https://www.sudo.ws/devel.html#1.8.30b2
https://www.sudo.ws/stable.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU23783
Risk: Low
CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2019-19232
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to impersonate nonexistent users.
The vulnerability exists in sudo due to incorrect processing of numeric uids that are not associated with any existing user account. A local user with access to a Runas ALL sudoer accountcan impersonate a a nonexistent user.
MitigationInstall update from vendor's website.
Vulnerable software versionsSudo: 1.8.0 - 1.8.29
CPE2.3https://www.sudo.ws/devel.html#1.8.30b2
https://www.sudo.ws/stable.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.