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CVE-2020-15166

Status Candidate

Overview

In ZeroMQ before version 4.3.3, there is a denial-of-service vulnerability. Users with TCP transport public endpoints, even with CURVE/ZAP enabled, are impacted. 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. This is patched in version 4.3.3.

Related Files

Debian Security Advisory 4761-1
Posted Sep 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4761-1 - It was discovered that ZeroMQ, a lightweight messaging kernel library does not properly handle connecting peers before a handshake is completed. A remote, unauthenticated client connecting to an application using the libzmq library, running with a socket listening with CURVE encryption/authentication enabled can take advantage of this flaw to cause a denial of service affecting authenticated and encrypted clients.

tags | advisory, remote, denial of service, kernel
systems | linux, debian
advisories | CVE-2020-15166
SHA-256 | 0b04a5aaab9ee659966e2bbeb22a5b3b23c2f888e4a32faf559460daca53aaa1
Gentoo Linux Security Advisory 202009-12
Posted Sep 14, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202009-12 - A vulnerability in ZeroMQ could lead to a Denial of Service condition. Versions less than 4.3.3 are affected.

tags | advisory, denial of service
systems | linux, gentoo
advisories | CVE-2020-15166
SHA-256 | b320f797f1d3fca11394a13c7820e148ec210cbf57d10fb0795cc282035ed638
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