CVE-2020-7040
storeBackup.pl in storeBackup through 3.5 relies on the /tmp/storeBackup.lock pathname, which...
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.)
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.)
- Record
CVE-2020-7040- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-59
- Updated
- 2026-11-02
CVE List No score
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.)
- Record
CVE-2020-7040- Updated
- 2026-11-02
EUVDEUVD-2020-28174 No score
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.)
- Record
EUVD-2020-28174- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gc95-jc79-5q6h
storeBackup.pl in storeBackup through 3.5 relies on the /tmp/storeBackup.lock pathname, which...
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.)
- Record
GHSA-gc95-jc79-5q6h- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-59
- Updated
- 2026-11-02
OSV
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.)
- Record
CVE-2020-7040- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-7040
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.)
- Record
DEBIAN-CVE-2020-7040- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Show 4 moreShow less
OSVUBUNTU-CVE-2020-7040
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.)
- Record
UBUNTU-CVE-2020-7040- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVopenSUSE-SU-2020:0119-1 No score
Security update for storeBackup
This update for storeBackup fixes the following issues:
- CVE-2020-7040: Fixed a symlink attack which could lead to denial of service (boo#1156767).
- Record
openSUSE-SU-2020:0119-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11410-1 No score
storeBackup-3.5-13.2 on GA media
These are all security issues fixed in the storeBackup-3.5-13.2 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11410-1- Updated
- 2026-11-02
OSVUSN-4508-1 No score
storebackup vulnerability
It was discovered that StoreBackup did not properly manage lock files. A local attacker could use this issue to cause a denial of service or escalate privileges and run arbitrary code. (CVE-2020-7040)
- Record
USN-4508-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
storebackupDebian:12 |
before 3.2.1-2 | 3.2.1-2 |
storebackupDebian:13 |
before 3.2.1-2 | 3.2.1-2 |
storebackupDebian:14 |
before 3.2.1-2 | 3.2.1-2 |
storebackupDebian:8 |
before 3.2.1-1+deb8u1, plus listed versions 3.2.1-1 |
3.2.1-1+deb8u1 |
storebackupUbuntu:16.04:LTS |
before 3.2.1-1+deb8u1build0.16.04.1, plus listed versions 3.2.1-1 |
3.2.1-1+deb8u1build0.16.04.1 |
storebackupUbuntu:18.04:LTS |
before 3.2.1-1+deb8u1build0.18.04.1, plus listed versions 3.2.1-1 |
3.2.1-1+deb8u1build0.18.04.1 |
storebackupUbuntu:20.04:LTS |
before 3.2.1-1+deb8u1build0.20.04.1, plus listed versions 3.2.1-1 |
3.2.1-1+deb8u1build0.20.04.1 |
storeBackupSUSE:Package Hub 15 |
before 3.5-bp151.4.3.1 | 3.5-bp151.4.3.1 |
storeBackupSUSE:Package Hub 15 SP1 |
before 3.5-bp151.4.3.1 | 3.5-bp151.4.3.1 |
storeBackupopenSUSE:Leap 15.1 |
before 3.5-bp151.4.3.1 | 3.5-bp151.4.3.1 |
storeBackupopenSUSE:Tumbleweed |
before 3.5-13.2 | 3.5-13.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-7040 is a high vulnerability (CVSS 8.1) in Storebackup, published January 21, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.87%, the 86th percentile. Fixed in storebackup 3.2.1-2.
References
bugzilla.suse.com/show_bug.cgi?id=CVE-2020-7040
openwall.com/lists/oss-security/2020/01/20/3
seclists.org/oss-sec/2020/q1/20
Show 13 moreShow less
lists.opensuse.org/opensuse-security-announce/2020-01/msg00054.html
lists.debian.org/debian-lts-announce/2020/02/msg00003.html
usn.ubuntu.com/4508-1
nvd.nist.gov/vuln/detail/CVE-2020-7040
github.com/advisories/GHSA-gc95-jc79-5q6h
security-tracker.debian.org/tracker/CVE-2020-7040
ubuntu.com/security/CVE-2020-7040
cve.org/CVERecord?id=CVE-2020-7040
suse.com/security/cve/CVE-2020-7040