PT-2020-19350 · Storebackup+3 · Storebackup+3

Matthias Gerstner · Published 2020-01-21 · Updated 2024-06-15 · CVE-2020-7040

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions storeBackup versions 3.5 and earlier

Description The issue allows for symlink attacks, potentially leading to privilege escalation, as it relies on the /tmp/storeBackup.lock pathname. Local users can also create a plain file named /tmp/storeBackup.lock to block the use of storeBackup until an admin manually deletes that file.

Recommendations For storeBackup versions 3.5 and earlier, consider restricting access to the /tmp/storeBackup.lock file to prevent symlink attacks and privilege escalation. As a temporary workaround, monitor the /tmp directory for any suspicious files or symlinks named storeBackup.lock and remove them manually to ensure storeBackup functionality.

Fix

Link Following

Weakness Enumeration

CWE-59

Related Identifiers

CVE-2020-7040

DLA-2095-1

OPENSUSE-SU-2020:0119-1

OPENSUSE-SU-2020_0119-1

OPENSUSE-SU-2024:11410-1

USN-4508-1

Affected Products

Linuxmint

Suse

Ubuntu

Storebackup

References · 27

• https://cve.org/CVERecord?id=CVE-2020-7040 · Security Note
• https://ubuntu.com/security/CVE-2020-7040 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-7040 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-7040 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11410-1 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2095-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-7040 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-7040 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4508-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-7040 · Security Note
• https://ubuntu.com/security/notices/USN-4508-1 · Vendor Advisory
• https://usn.ubuntu.com/4508-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:0119-1 · Vendor Advisory
• http://openwall.com/lists/oss-security/2020/01/20/3 · Note
• http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00054.html · Vendor Advisory, Patch