CVE-2020-7040

Name: CVE-2020-7040
Creator: NVD / NIST
Published: 2020-01-21T21:15:16.443+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 2.87%

Last modified Jun 17, 2026

CVE-2020-7040 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.). EPSS estimates a 2.87% chance of exploitation in the next 30 days.

Description

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.)

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.87%

85.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-59

Affected Software

Vendor	Product	Versions
Storebackup	Storebackup	<= 3.5
Debian	Debian Linux	8.0
Opensuse	Backports Sle	15.0
Opensuse	Leap	15.1
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	20.04

References

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00054.htmlMailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/20/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/21/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/22/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/22/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/23/1Mailing List, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-7040Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00003.htmlMailing List, Third Party Advisory
https://seclists.org/oss-sec/2020/q1/20Mailing List, Third Party Advisory
https://usn.ubuntu.com/4508-1/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00054.htmlMailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/20/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/21/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/22/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/22/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/01/23/1Mailing List, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-7040Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00003.htmlMailing List, Third Party Advisory
https://seclists.org/oss-sec/2020/q1/20Mailing List, Third Party Advisory
https://usn.ubuntu.com/4508-1/Third Party Advisory

Timeline

Published: Jan 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7040?

How severe is CVE-2020-7040?

CVE-2020-7040 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 2.87% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7040?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-7040?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST