NuGet Package Manager Tampering Vulnerability [CVE-2019-0976]

CVE Number – CVE-2019-0976

A vulnerability in the Package Manager of NuGet could allow a local attacker to escalate privileges on a targeted system.The vulnerability exists because the affected software allows the modification of the intermediate build folder. An attacker could exploit this vulnerability by accessing the system and modify the contents of the intermediate build folder on a targeted system. A successful exploit could allow the attacker to escalate privileges and tamper with files that impact binaries on the targeted system.Microsoft has confirmed the vulnerability and released software updates.

Analysis

  • To exploit this vulnerability, the attacker must have user-level access to the targeted system. This access requirement could reduce the likelihood of a successful exploit.

Safeguards

  • Administrators are advised to apply the appropriate updates.

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

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

    Administrators are advised to monitor critical systems.

Vendor Announcements

  • Microsoft has released a security advisory at the following link: CVE-2019-0976

Fixed Software

  • Microsoft has released software updates at the following link: NuGet 5.1.0

Duncan Newell

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

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