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Bug 740574 (CVE-2020-15166) - net-libs/zeromq-4.3.3: Denial-of-Service on CURVE/ZAP-protected servers by unauthenticated clients (CVE-2020-15166)
Summary: net-libs/zeromq-4.3.3: Denial-of-Service on CURVE/ZAP-protected servers by un...
Alias: CVE-2020-15166
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [glsa+ cleanup cve]
Keywords: CC-ARCHES
Depends on:
Reported: 2020-09-05 20:10 UTC by Thomas Deutschmann
Modified: 2020-09-19 20:05 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---
nattka: sanity-check+


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Description Thomas Deutschmann gentoo-dev Security 2020-09-05 20:10:51 UTC
Incoming details.
Comment 1 Thomas Deutschmann gentoo-dev Security 2020-09-07 21:42:03 UTC
A security vulnerability has been found in libzmq/zeromq.

CVE-2020-15166: Denial-of-Service on CURVE/ZAP-protected servers by
unauthenticated clients.
If a raw TCP socket is opened and connected to an endpoint that is fully
configured with CURVE/ZAP, legitimate clients will not be able to exchange
any message. Handshakes complete successfully, and messages are delivered to
the library, but the server application never receives them.
For more information see the security advisory:

The following upstream releases fix the issue:

Individual backported patches can be found on the upstream bug tracker,
and have been sent separately to the security teams of various
Comment 2 Larry the Git Cow gentoo-dev 2020-09-07 22:06:03 UTC
The bug has been referenced in the following commit(s):

commit af1aa5dda0985512c063560717852166af82e144
Author:     Thomas Deutschmann <>
AuthorDate: 2020-09-07 22:02:55 +0000
Commit:     Thomas Deutschmann <>
CommitDate: 2020-09-07 22:05:57 +0000

    net-libs/zeromq: bump to v4.3.3
    Package-Manager: Portage-3.0.5, Repoman-3.0.1
    Signed-off-by: Thomas Deutschmann <>

 net-libs/zeromq/Manifest            |  1 +
 net-libs/zeromq/zeromq-4.3.3.ebuild | 61 +++++++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)
Comment 3 Sam James gentoo-dev Security 2020-09-08 04:07:45 UTC
arm64 done
Comment 4 Thomas Deutschmann gentoo-dev Security 2020-09-08 15:58:17 UTC
x86 stable
Comment 5 Sam James gentoo-dev Security 2020-09-08 15:58:30 UTC
arm done
Comment 6 Sergei Trofimovich gentoo-dev 2020-09-10 07:47:55 UTC
sparc stable
Comment 7 Sergei Trofimovich gentoo-dev 2020-09-10 07:51:31 UTC
ppc64 stable
Comment 8 Rolf Eike Beer 2020-09-10 19:54:55 UTC
hppa stable
Comment 9 Sam James gentoo-dev Security 2020-09-12 17:48:16 UTC
ppc stable
Comment 10 Thomas Deutschmann gentoo-dev Security 2020-09-12 19:59:05 UTC
New GLSA request filed.
Comment 11 GLSAMaker/CVETool Bot gentoo-dev 2020-09-13 23:43:46 UTC
This issue was resolved and addressed in
 GLSA 202009-12 at
by GLSA coordinator Thomas Deutschmann (whissi).
Comment 12 Thomas Deutschmann gentoo-dev Security 2020-09-13 23:44:14 UTC
Re-opening for remaining architectures.
Comment 13 Tomáš Mózes 2020-09-17 05:37:39 UTC
Please stabilize amd64.
Comment 14 Sam James gentoo-dev Security 2020-09-19 19:51:21 UTC
amd64 done

all arches done
Comment 15 Sam James gentoo-dev Security 2020-09-19 20:05:03 UTC
Please cleanup.