LFTP Remote File Names Unauthorized Access Vulnerability [CVE-2018-10916]

CVE Number – CVE-2018-10916

A vulnerability in LFTP could allow an unauthenticated, remote attacker to gain unauthorized access to a targeted system.

The vulnerability exists because the affected software improperly sanitizes remote file names. An attacker could exploit this vulnerability by persuading a user to use reverse mirroring on a malicious FTP server. A successful exploit could allow the attacker to gain unauthorized access to the targeted system, resulting in the loss of files in the current working directory.

The vendor has confirmed the vulnerability and released a software patch.

Analysis
  • To exploit this vulnerability, an attacker must persuade a user to use reverse mirroring, making exploitation more difficult in environments that restrict network access from untrusted sources.
Safeguards
  • Administrators are advised to apply the appropriate updates.

    Administrators are advised to allow only trusted users to access network systems.

    Administrators are advised to allow only privileged users to access administration or management systems.

    Administrators are advised to monitor affected systems.

Vendor Announcements
  • The vendor has released a git commit at the following link: CVE-2018-10916

Fixed Software
  • The vendor has released software updates at the following link: lftp 4.8.4




Duncan is a technology professional with over 20 years experience of working in various IT roles. He also has a wide range of other skills in radio, electronics and telecommunications.

Duncan Newell

Duncan is a technology professional with over 20 years experience of working in various IT roles. He also has a wide range of other skills in radio, electronics and telecommunications.

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