DescriptionThe OpenSSL address implementation in Socat and 2.0.0-b8 does not use a prime number for the DH, which makes it easier for remote attackers to obtain the shared secret.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs813536

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
socat (PTS)buster1.7.3.2-2fixed
bookworm, sid1.7.4.4-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
socatsourcesqueeze(not affected)
socatsourcewheezy(not affected)
socatsourcejessie(not affected)


[jessie] - socat <not-affected> (Broken 1024bit DH parameter generated in
[wheezy] - socat <not-affected> (Broken 1024bit DH parameter generated in
[squeeze] - socat <not-affected> (Broken 1024bit DH parameter generated in
The issues is about "In the OpenSSL address implementation the hard coded 1024 bit DH
p parameter was not prime.". Upstream has generated new parametes (and made it 2048
bit long.

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