Vulnerability in Storebackup
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.)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.029 (86.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
Affected products
- Storebackup
- Canonical Ubuntu Linux — versions 16.04, 18.04, 20.04
- Debian Linux — versions 8.0
- openSUSE Backports Sle — versions 15.0
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.suse.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2020/01/20/3 (Mailing List, Third Party Advisory)
- seclists.org/oss-sec/2020/q1/20 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/01/21/2 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/01/22/2 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/01/22/3 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/01/23/1 (mailing-list, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00054.html (vendor-advisory, Patch, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/02/msg00003.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4508-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7040?
- CVE-2020-7040 is a high-severity vulnerability in Storebackup, classified under Improper Link Resolution Before File Access. CVSS score: 8.1/10. Published 2020-01-21.
- How severe is CVE-2020-7040?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2020-7040 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.