Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Postgresql | Postgresql | >= 11.0, < 11.13 |
| Redhat | Virtualization | 4.0 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux For Ibm Z Systems | 8.0 |
| Redhat | Enterprise Linux For Power Little Endian | 8.0 |
| Redhat | Software Collections | 1.0 |
| Fedoraproject | Fedora | 34 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2001857Issue TrackingThird Party Advisory
- https://security.gentoo.org/glsa/202211-04Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220407-0008/Third Party Advisory
- https://www.postgresql.org/support/security/CVE-2021-3677/Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2001857Issue TrackingThird Party Advisory
- https://security.gentoo.org/glsa/202211-04Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220407-0008/Third Party Advisory
- https://www.postgresql.org/support/security/CVE-2021-3677/Vendor Advisory
FAQ
What is CVE-2021-3677?
CVE-2021-3677 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 a...
How severe is CVE-2021-3677?
CVE-2021-3677 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3677?
Check the references section above for vendor advisories and patch information. Affected products include: Postgresql Postgresql, Redhat Virtualization, Redhat Enterprise Linux, Redhat Enterprise Linux For Ibm Z Systems, Redhat Enterprise Linux For Power Little Endian.