CVE-2020-25694
Many PostgreSQL-provided client applications have options that create additional database connections. Some of those applications reuse only the basic connection parameters (e.g. host , user , port ), dropping others. If this drops a security-relevant parameter (e.g. channel_binding , sslmode , requirepeer , gssencmode ), the attacker has an opportunity to complete a MITM attack or observe cleartext transmission.
Affected applications are clusterdb , pg_dump , pg_restore , psql , reindexdb , and vacuumdb . The vulnerability arises only if one invokes an affected client application with a connection string containing a security-relevant parameter.
This also fixes how the \connect command of psql reuses connection parameters, i.e. all non-overridden parameters from a previous connection string now re-used.
The PostgreSQL project thanks Peter Eisentraut for reporting this problem.
Version Information
| Affected branch | Introduced | Fixed In | Fix Published |
|---|
| 10 | — | 10.15 | 2020-11-12 |
| 11 | — | 11.10 | 2020-11-12 |
| 12 | — | 12.5 | 2020-11-12 |
| 13 | — | 13.1 | 2020-11-12 |
| 9.5 | — | 9.5.24 | 2020-11-12 |
| 9.6 | — | 9.6.20 | 2020-11-12 |
CVSS 3.0
| Overall Score | 8.1 |
|---|
| Component | client |
|---|
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
|---|
First published: 2020-11-12
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