SB2020012114 - Privilege escalation in storeBackup
Published: January 21, 2020 Updated: May 4, 2021
Security Bulletin ID
SB2020012114
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) UNIX symbolic link following (CVE-ID: CVE-2020-7040)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a symlink following issue within the storeBackup.pl in storeBackup, as software relies on the /tmp/storeBackup.lock pathname. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.
Successful exploitation of this vulnerability may result in privilege escalation.
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00054.html
- http://www.openwall.com/lists/oss-security/2020/01/20/3
- http://www.openwall.com/lists/oss-security/2020/01/21/2
- http://www.openwall.com/lists/oss-security/2020/01/22/2
- http://www.openwall.com/lists/oss-security/2020/01/22/3
- http://www.openwall.com/lists/oss-security/2020/01/23/1
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-7040
- https://seclists.org/oss-sec/2020/q1/20