Information disclosure in PostgreSQL
CVE-2021-3393
An information leak was discovered in postgresql in versions before 13.2, before 12.6 and before 11.11. A user having UPDATE permission but not SELECT permission to a particular column could craft queries which, under some circumstances, might disclose values from that column in error messages. An attacker could use this flaw to obtain information stored in a column they are allowed to write but not read.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.012 (66.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- PostgreSQL
- Red Hat Enterprise Linux — versions 8.0
- Red Hat Software Collections
- PostgreSQL — versions postgresql 13.2, postgresql 12.6, postgresql 11.11
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- security.netapp.com/advisory/ntap-20210507-0006/ (Third Party Advisory)
- security.gentoo.org/glsa/202105-32 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3393?
- CVE-2021-3393 is a medium-severity vulnerability in PostgreSQL, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 4.3/10. Published 2021-04-01.
- How severe is CVE-2021-3393?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2021-3393 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.