Description
In PostgreSQL 9.3.x before 9.3.17, 9.4.x before 9.4.12, 9.5.x before 9.5.7, and 9.6.x before 9.6.3, it was found that the PGREQUIRESSL environment variable was no longer enforcing a SSL/TLS connection to a PostgreSQL server. An active Man-in-the-Middle attacker could use this flaw to strip the SSL/TLS protection from a connection between a client and a server.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The PostgreSQL Global Development Group | PostgreSQL | 9.3 - 9.6 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | postgresql-9.4 | 9.4.12-0+deb8u1 | DSA-3851-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | postgresql-9.5 | 9.5.7-0ubuntu0.16.04 | — |
| Ubuntu 14.04 LTS | postgresql-9.3 | 9.3.17-0ubuntu0.14.04 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 2 | rh-postgresql94-postgresql +11 | 9.4.12-1.el6 | RHSA-2017:1678 |
| RHEL 2 | rh-postgresql95-postgresql +10 | 9.5.7-2.el6 | RHSA-2017:1677 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Network Satellite Managed Db 5 | rh-postgresql95-postgresql +4 | 9.5.7-2.el6 | RHSA-2017:2425, RHSA-2017:1838 |
| Red Hat Network Satellite Managed Db 5 | rh-postgresql95-runtime | 2.2-3.el6 | RHSA-2017:2425 |
| Red Hat Network Satellite Managed Db 5 | spacewalk-postgresql-server | 9.5-1.el6sat | RHSA-2017:2425 |
| Red Hat Network Satellite Managed Db 5 | spacewalk-setup-postgresql | 2.3.0-27.el6sat | RHSA-2017:2425 |
| Red Hat Network Satellite Managed Db 5 | spacewalk-web +2 | 2.3.2-35.el6sat | RHSA-2017:2425 |
| Red Hat Network Satellite 5 | rh-postgresql95-postgresql +4 | 9.5.7-2.el6 | RHSA-2017:2425, RHSA-2017:1838 |
| Red Hat Network Satellite 5 | rh-postgresql95-runtime | 2.2-3.el6 | RHSA-2017:2425 |
| Red Hat Network Satellite 5 | spacewalk-backend +16 | 2.3.3-53.el6sat | RHSA-2017:2425 |
| Red Hat Network Satellite 5 | spacewalk-postgresql-server | 9.5-1.el6sat | RHSA-2017:2425 |
| Red Hat Network Satellite 5 | spacewalk-pxt +8 | 2.3.2-35.el6sat | RHSA-2017:2425 |
| Red Hat Network Satellite 5 | spacewalk-setup-postgresql | 2.3.0-27.el6sat | RHSA-2017:2425 |
| Red Hat Network Satellite 5 | spacewalk-utils | 2.3.2-32.el6sat | RHSA-2017:2425 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | postgresql94 +1 | 9.4.12-20.1 | SUSE-SU-2017:1690-1 |
| SLES 12 | postgresql93 | 9.3.17-24.2 | SUSE-SU-2017:1441-1 |
| SLES 11 SP4 | postgresql94 +1 | 9.4.12-0.22.3 | SUSE-SU-2017:1783-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | postgresql94 | 9.4.12-20.1 | SUSE-SU-2017:1690-1 |
| SLES for SAP 12 | postgresql93 | 9.3.17-24.2 | SUSE-SU-2017:1441-1 |
| SLES for SAP 11 SP4 | postgresql94 +1 | 9.4.12-0.22.3 | SUSE-SU-2017:1783-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.20 | postgresql14 +1 | 9.6.3-r0 | — |
| Alpine v3.19 | postgresql14 +1 | 9.6.3-r0 | — |
| Alpine v3.18 | postgresql14 +1 | 9.6.3-r0 | — |
| Alpine v3.17 | postgresql14 +1 | 9.6.3-r0 | — |
| Alpine v3.16 | postgresql14 | 9.6.3-r0 | — |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.15 | postgresql14 | 9.6.3-r0 | — |
| Alpine v3.14 | postgresql | 9.6.3-r0 | — |
| Alpine v3.13 | postgresql | 9.6.3-r0 | — |
| Alpine v3.12 | postgresql | 9.6.3-r0 | — |
| Alpine v3.11 | postgresql | 9.6.3-r0 | — |
| Alpine v3.10 | postgresql | 9.6.3-r0 | — |
| Alpine v3.9 | postgresql | 9.6.3-r0 | — |
| Alpine v3.8 | postgresql | 9.6.3-r0 | — |
| Alpine v3.7 | postgresql | 9.6.3-r0 | — |
| Alpine v3.6 | postgresql | 9.6.3-r0 | — |
| Alpine v3.5 | postgresql | 9.6.3-r0 | — |
| Alpine v3.4 | postgresql | 9.5.7-r0 | — |
| Alpine v3.3 | postgresql | 9.4.12-r0 | — |
Advisories 9
- RHSA-2017:2425 Red Hat Security Advisory: rh-postgresql95-postgresql security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1838 Red Hat Security Advisory: rh-postgresql95-postgresql security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1678 Red Hat Security Advisory: rh-postgresql94-postgresql security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2017:1677 Red Hat Security Advisory: rh-postgresql95-postgresql security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-3851-1 postgresql-9.4 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2017:1783-1 Security update for postgresql94 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1690-1 Security update for postgresql94 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1441-1 Security update for postgresql93 SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-1969 PostgreSQL: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 27, 2025
References
- 1038476 vdb-entry
- DSA-3851 vendor-advisory
- RHSA-2017:2425 vendor-advisory
- RHSA-2017:1678 vendor-advisory
- RHSA-2017:1677 vendor-advisory
- https://www.postgresql.org/about/news/1746/
- RHSA-2017:1838 vendor-advisory
- 98461 vdb-entry
- GLSA-201710-06 vendor-advisory