CVE-2021-43767 Security feature bypass in Odyssey
Man-in-the-middle attackers can inject false query responses to clients when Odyssey uses specific SSL authentication configurations, bypassing encryption integrity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-43767?
CVE-2021-43767 is a medium-severity vulnerability in Postgresql Postgresql, published on 25 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Odyssey passes to client unencrypted bytes from man-in-the-middle When Odyssey storage is configured to use the PostgreSQL server using 'trust' authentication with a 'clientcert' requirement or to use 'cert' authentication, a man-in-the-middle attacker can inject false responses to the client's first few queries. Despite the use of SSL certificate verification and encryption, Odyssey will pass these results to client as if they originated from valid server. This is similar to CVE-2021-23222 for PostgreSQL.
Which versions are affected by CVE-2021-43767?
1 open source package ship an affected version, including postgresql. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
postgresql Bitnami | From 9.6.0 | 9.6.24, 10.19.0, 11.14.0, 12.9.0, 13.5.0, 14.0.1 |
Products include Postgresql Postgresql.
How do I fix CVE-2021-43767?
Upgrade postgresql to a fixed version for your release line: 9.6.24, 10.19.0, 11.14.0 or 12.9.0.
Is CVE-2021-43767 being exploited?
There is no known exploitation of CVE-2021-43767 in the wild and no public exploit code.
Other vulnerabilities in Postgresql Postgresql
Sources
Also known as BIT-postgresql-2021-43767, GHSA-xmm7-85wh-j3jf, JLSEC-2026-36.