Advisory Published

USN-3731-2: LFTP vulnerability

First published: Mon Aug 06 2018(Updated: )

USN-3731-1 fixed a vulnerability in LFTP. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: It was discovered that LFTP incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/lftp<4.3.3-1ubuntu0.1
4.3.3-1ubuntu0.1
Ubuntu OpenSSH Client=12.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-3731-2?

    The severity of USN-3731-2 is classified as a potential denial of service vulnerability affecting LFTP.

  • How do I fix USN-3731-2?

    To fix USN-3731-2, update the LFTP package to version 4.3.3-1ubuntu0.1 on Ubuntu 12.04 ESM.

  • What products are affected by USN-3731-2?

    USN-3731-2 affects the LFTP package version up to 4.3.3-1ubuntu0.1 on Ubuntu 12.04.

  • What was discovered in USN-3731-2?

    It was discovered that LFTP incorrectly handled certain files, leading to possible denial of service attacks.

  • Is USN-3731-2 an update for an older advisory?

    Yes, USN-3731-2 provides a corresponding update to the previously released USN-3731-1.

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