Information disclosure in PostgreSQL
CVE-2021-3677
A flaw was found in postgresql. A purpose-crafted query can read arbitrary bytes of server memory. In the default configuration, any authenticated database user can complete this attack at will. The attack does not require the ability to create objects. If server settings include max_worker_processes=0, the known versions of this attack are infeasible. However, undiscovered variants of the attack may be independent of that setting.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.014 (72.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- PostgreSQL
- Fedoraproject Fedora — versions 34
- Red Hat Enterprise Linux — versions 8.0, 7.0
- Red Hat Enterprise Linux For IBM Z Systems — versions 8.0
- Red Hat Enterprise Linux For Power Little Endian — versions 8.0
- Red Hat Software Collections — versions 1.0
- Red Hat Virtualization — versions 4.0
- PostgreSQL — versions Fixedin v13.4, v12.8, v11.13
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.postgresql.org/support/security/CVE-2021-3677/ (Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- security.netapp.com/advisory/ntap-20220407-0008/ (Third Party Advisory)
- security.gentoo.org/glsa/202211-04 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3677?
- CVE-2021-3677 is a medium-severity vulnerability in PostgreSQL, classified under Information Disclosure. CVSS score: 6.5/10. Published 2022-03-02.
- How severe is CVE-2021-3677?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-3677 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.