Link Following The advisory has been revoked - it doesn't affect any version of package storebackup (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1904-STOREBACKUP-543071
- published20 Jan 2020
- disclosed21 Jan 2020
Introduced: 20 Jan 2020
CVE-2020-7040 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:19.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream storebackup package and not the storebackup package as distributed by Ubuntu.
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.)
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2020-7040
- https://lists.debian.org/debian-lts-announce/2020/02/msg00003.html
- https://security-tracker.debian.org/tracker/CVE-2020-7040
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-7040
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00054.html
- https://seclists.org/oss-sec/2020/q1/20
- 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://usn.ubuntu.com/4508-1/