Description
libzmq before 4.0.6 and 4.1.x before 4.1.1 allows remote attackers to conduct downgrade attacks and bypass ZMTP v3 protocol security mechanisms via a ZMTP v2 or earlier header.
References (5)
Core 5
Core References
Patch x_refsource_confirm
https://github.com/zeromq/zeromq4-x/commit/b6e3e0f601e2c1ec1f3aac880ed6a3fe63043e51
Issue Tracking x_refsource_confirm
https://github.com/zeromq/libzmq/issues/1273
Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2015/dsa-3255
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2015-May/159176.html
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2015-06/msg00018.html
Scores
EPSS
0.0253
EPSS Percentile
83.0%
Details
CWE
CWE-20
Status
published
Products (2)
zeromq/zeromq
4.1.0 rc1
zeromq/zeromq
< 4.0.5
Published
Jun 03, 2015
Tracked Since
Feb 18, 2026