Debian Security Advisory
DLA-2751-1 postgresql-9.6 -- LTS security update
- Date Reported:
- 31 Aug 2021
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2021-3449.
- More information:
PostgreSQL 9.6.23 fixes this security issue:
Disallow SSL renegotiation more completely (Michael Paquier)
SSL renegotiation has been disabled for some time, but the server would still cooperate with a client-initiated renegotiation request. A maliciously crafted renegotiation request could result in a server crash (see OpenSSL issue CVE-2021-3449). Disable the feature altogether on OpenSSL versions that permit doing so, which are 1.1.0h and newer.
For Debian 9 stretch, this problem has been fixed in version 9.6.23-0+deb9u1.
We recommend that you upgrade your postgresql-9.6 packages.
For the detailed security status of postgresql-9.6 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/postgresql-9.6
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS