Advisory Published

USN-3882-1: curl vulnerabilities

First published: Wed Feb 06 2019(Updated: )

Wenxiang Qian discovered that curl incorrectly handled certain NTLM authentication messages. A remote attacker could possibly use this issue to cause curl to crash, resulting in a denial of service. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2018-16890) Wenxiang Qian discovered that curl incorrectly handled certain NTLMv2 authentication messages. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2019-3822) Brian Carpenter discovered that curl incorrectly handled certain SMTP responses. A remote attacker could possibly use this issue to cause curl to crash, resulting in a denial of service. (CVE-2019-3823)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/curl<7.61.0-1ubuntu2.3
7.61.0-1ubuntu2.3
=18.10
All of
ubuntu/libcurl3-gnutls<7.61.0-1ubuntu2.3
7.61.0-1ubuntu2.3
=18.10
All of
ubuntu/libcurl3-nss<7.61.0-1ubuntu2.3
7.61.0-1ubuntu2.3
=18.10
All of
ubuntu/libcurl4<7.61.0-1ubuntu2.3
7.61.0-1ubuntu2.3
=18.10
All of
ubuntu/curl<7.58.0-2ubuntu3.6
7.58.0-2ubuntu3.6
=18.04
All of
ubuntu/libcurl3-gnutls<7.58.0-2ubuntu3.6
7.58.0-2ubuntu3.6
=18.04
All of
ubuntu/libcurl3-nss<7.58.0-2ubuntu3.6
7.58.0-2ubuntu3.6
=18.04
All of
ubuntu/libcurl4<7.58.0-2ubuntu3.6
7.58.0-2ubuntu3.6
=18.04
All of
ubuntu/curl<7.47.0-1ubuntu2.12
7.47.0-1ubuntu2.12
=16.04
All of
ubuntu/libcurl3<7.47.0-1ubuntu2.12
7.47.0-1ubuntu2.12
=16.04
All of
ubuntu/libcurl3-gnutls<7.47.0-1ubuntu2.12
7.47.0-1ubuntu2.12
=16.04
All of
ubuntu/libcurl3-nss<7.47.0-1ubuntu2.12
7.47.0-1ubuntu2.12
=16.04
All of
ubuntu/curl<7.35.0-1ubuntu2.20
7.35.0-1ubuntu2.20
=14.04
All of
ubuntu/libcurl3<7.35.0-1ubuntu2.20
7.35.0-1ubuntu2.20
=14.04
All of
ubuntu/libcurl3-gnutls<7.35.0-1ubuntu2.20
7.35.0-1ubuntu2.20
=14.04
All of
ubuntu/libcurl3-nss<7.35.0-1ubuntu2.20
7.35.0-1ubuntu2.20
=14.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2018-16890?

    The severity of CVE-2018-16890 is moderate.

  • Which versions of Ubuntu are affected by CVE-2018-16890?

    Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10 are affected.

  • How can a remote attacker exploit CVE-2018-16890?

    A remote attacker could possibly cause curl to crash, resulting in a denial of service.

  • How can I fix the curl vulnerability in Ubuntu 18.10?

    To fix the curl vulnerability in Ubuntu 18.10, update the curl package to version 7.61.0-1ubuntu2.3 or later.

  • Where can I find more information about CVE-2018-16890?

    You can find more information about CVE-2018-16890 on the Ubuntu Security website.

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