In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated client connecting to a libzmq application, running with a socket listening with CURVE encryption/authentication enabled, may cause a stack overflow and overwrite the stack with arbitrary data, due to a buffer overflow in the library. Users running public servers with the above configuration are highly encouraged to upgrade as soon as possible, as there are no known mitigations.

The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4920-1 advisory.

    It was discovered that ZeroMQ incorrectly handled certain application metadata. A remote attacker could     use this issue to cause ZeroMQ to crash, or possibly execute arbitrary code. (CVE-2019-13132)

    It was discovered that ZeroMQ mishandled certain network traffic. An unauthenticated attacker could use     this vulnerability to cause a denial-of- service and prevent legitimate clients from communicating with     ZeroMQ. (CVE-2020-15166)

    It was discovered that ZeroMQ did not properly manage memory under certain circumstances. If a user or     automated system were tricked into connecting to one or multiple compromised servers, a remote attacker     could use this issue to cause a denial of service. (CVE-2021-20234)

    It was discovered that ZeroMQ incorrectly handled memory when processing messages with arbitrarily large     sizes under certain circumstances. A remote unauthenticated attacker could use this issue to cause a     ZeroMQ server to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue     only affected Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2021-20235)

    It was discovered that ZeroMQ did not properly manage memory under certain circumstances. A remote     unauthenticated attacker could use this issue to cause a ZeroMQ server to crash, resulting in a denial of     service. This issue only affected Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2021-20237)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES11 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2019:14117-1 advisory.

  - In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated     client connecting to a libzmq application, running with a socket listening with CURVE     encryption/authentication enabled, may cause a stack overflow and overwrite the stack with arbitrary data,     due to a buffer overflow in the library. Users running public servers with the above configuration are     highly encouraged to upgrade as soon as possible, as there are no known mitigations. (CVE-2019-13132)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Fang-Pen Lin reports :

A remote, unauthenticated client connecting to a libzmq application, running with a socket listening with CURVE encryption/authentication enabled, may cause a stack overflow and overwrite the stack with arbitrary data, due to a buffer overflow in the library. Users running public servers with the above configuration are highly encouraged to upgrade as soon as possible, as there are no known mitigations.

Security fix for CVE-2019-13132

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update of the zeromq package has been released.

The remote host is affected by the vulnerability described in GLSA-201908-17 (ZeroMQ: Arbitrary code execution)

    A buffer overflow was discovered in ZeroMQ.
  Impact :

    An attacker could possibly execute arbitrary code with the privileges of       the process or cause a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

This update for zeromq fixes the following issues :

  - CVE-2019-13132: An unauthenticated remote attacker could     have exploited a stack overflow vulnerability on a     server that is supposed to be protected by encryption     and authentication to potentially gain a remote code     execution. (bsc#1140255)

  - Correctly mark license files as licence instead of     documentation (bsc#1082318)

This update was imported from the SUSE:SLE-15:Update update project.

This update for zeromq fixes the following issues :

  - CVE-2019-13132: An unauthenticated remote attacker could     have exploited a stack overflow vulnerability on a     server that is supposed to be protected by encryption     and authentication to potentially gain a remote code     execution. (bsc#1140255)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4050-1 advisory.

    It was discovered that ZeroMQ incorrectly handled certain application metadata. A remote attacker could     use this issue to cause ZeroMQ to crash, or possibly execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

This update for zeromq fixes the following issues :

CVE-2019-13132: An unauthenticated remote attacker could have exploited a stack overflow vulnerability on a server that is supposed to be protected by encryption and authentication to potentially gain a remote code execution. (bsc#1140255)

Correctly mark license files as licence instead of documentation (bsc#1082318)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Fang-Pen Lin discovered a stack-based buffer-overflow flaw in ZeroMQ, a lightweight messaging kernel library. 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 or the execution of arbitrary code.

Fang-Pen Lin discovered a stack-based buffer-overflow flaw in ZeroMQ, a lightweight messaging kernel library. 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 or the execution of arbitrary code.

For Debian 8 'Jessie', this problem has been fixed in version 4.0.5+dfsg-2+deb8u2.

We recommend that you upgrade your zeromq3 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
183116	Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM : ZeroMQ vulnerabilities (USN-4920-1)	Nessus	Ubuntu Local Security Checks	critical
150684	SUSE SLES11 Security Update : zeromq (SUSE-SU-2019:14117-1)	Nessus	SuSE Local Security Checks	critical
149977	FreeBSD : libzmq4 -- Stack overflow (6954a2b0-bda8-11eb-a04e-641c67a117d8)	Nessus	FreeBSD Local Security Checks	critical
129649	Fedora 31 : zeromq (2019-d20ce4d5a1)	Nessus	Fedora Local Security Checks	critical
129543	Fedora 30 : zeromq (2019-8916b4e890)	Nessus	Fedora Local Security Checks	critical
129541	Fedora 29 : zeromq (2019-4d8f9a9235)	Nessus	Fedora Local Security Checks	critical
128723	Photon OS 2.0: Zeromq PHSA-2019-2.0-0171	Nessus	PhotonOS Local Security Checks	critical
128167	Photon OS 1.0: Zeromq PHSA-2019-1.0-0245	Nessus	PhotonOS Local Security Checks	critical
128162	Photon OS 3.0: Zeromq PHSA-2019-3.0-0024	Nessus	PhotonOS Local Security Checks	critical
127966	GLSA-201908-17 : ZeroMQ: Arbitrary code execution	Nessus	Gentoo Local Security Checks	critical
126902	openSUSE Security Update : zeromq (openSUSE-2019-1767)	Nessus	SuSE Local Security Checks	critical
126596	SUSE SLED12 Security Update : zeromq (SUSE-SU-2019:1785-1)	Nessus	SuSE Local Security Checks	critical
126566	Ubuntu 16.04 LTS / 18.04 LTS : ZeroMQ vulnerability (USN-4050-1)	Nessus	Ubuntu Local Security Checks	critical
126562	SUSE SLED15 / SLES15 Security Update : zeromq (SUSE-SU-2019:1776-1)	Nessus	SuSE Local Security Checks	critical
126529	Debian DSA-4477-1 : zeromq3 - security update	Nessus	Debian Local Security Checks	critical
126528	Debian DLA-1849-1 : zeromq3 security update	Nessus	Debian Local Security Checks	critical

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