CVE-2020-7040
First published: Tue Jan 21 2020(Updated: )
storeBackup.pl in storeBackup through 3.5 relies on the /tmp/storeBackup.lock pathname, which allows symlink attacks that possibly lead to privilege escalation. (Local users can also create a plain file named /tmp/storeBackup.lock to block use of storeBackup until an admin manually deletes that file.)
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ubuntu/storebackup | <3.2.1-1+ | 3.2.1-1+ |
| ubuntu/storebackup | <3.2.1-1+ | 3.2.1-1+ |
| ubuntu/storebackup | <3.2.1-1+ | 3.2.1-1+ |
| debian/storebackup | 3.2.1-2 | |
| storeBackup storeBackup | <=3.5 | |
| Debian | =8.0 | |
| openSUSE Backports | =15.0 | |
| openSUSE Backports | =15.0-sp1 | |
| openSUSE | =15.1 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =20.04 |
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Reference Links
- 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://lists.debian.org/debian-lts-announce/2020/02/msg00003.html
- https://seclists.org/oss-sec/2020/q1/20
- https://usn.ubuntu.com/4508-1/
- https://www.openwall.com/lists/oss-security/2020/01/20/3
- https://ubuntu.com/security/notices/USN-4508-1
- https://www.cve.org/CVERecord?id=CVE-2020-7040
- https://nvd.nist.gov/vuln/detail/CVE-2020-7040
- https://launchpad.net/bugs/cve/CVE-2020-7040
- https://security-tracker.debian.org/tracker/CVE-2020-7040
- https://ubuntu.com/security/CVE-2020-7040
- https://bugzilla.suse.com/show_bug.cgi?id=1156767
- https://www.openwall.com/lists/oss-security/2020/01/20/3/1
Frequently Asked Questions
What is the severity of CVE-2020-7040?
CVE-2020-7040 is categorized as a high severity vulnerability due to its potential for privilege escalation via symlink attacks.
How do I fix CVE-2020-7040?
To fix CVE-2020-7040, upgrade the storeBackup package to version 3.5 or higher.
Which versions of storeBackup are affected by CVE-2020-7040?
Versions of storeBackup up to and including 3.5 are affected by CVE-2020-7040.
Can local users exploit CVE-2020-7040?
Yes, local users can exploit CVE-2020-7040 by creating a symlink to the /tmp/storeBackup.lock pathname.
What impact does CVE-2020-7040 have on system security?
CVE-2020-7040 can lead to privilege escalation, allowing attackers to gain unauthorized access to system resources.
- agent/type
- collector/mitre-cve
- source/MITRE
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- version/storebackup storebackup/3.5
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- version/ubuntu/16.04
- version/ubuntu/18.04
- version/ubuntu/20.04