Vulnerability in Mariadb
CVE-2020-7221
mysql_install_db in MariaDB 10.4.7 through 10.4.11 allows privilege escalation from the mysql user account to root because chown and chmod are performed unsafely, as demonstrated by a symlink attack on a chmod 04755 of auth_pam_tool_dir/auth_pam_tool. NOTE: this does not affect the Oracle MySQL product, which implements mysql_install_db differently.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- seclists.org/oss-sec/2020/q1/55 (Exploit, Mailing List, Third Party Advisory)
- bugzilla.suse.com/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- github.com/MariaDB/server/commit/9d18b6246755472c8324bf3e20e234e08ac45618 (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7221?
- CVE-2020-7221 is a high-severity vulnerability in Mariadb, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2020-02-04.
- How severe is CVE-2020-7221?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-7221 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.