Poppler _poppler_attachment_new NULL Pointer Dereference Vulnerability [CVE-2018-19149]

CVE Number – CVE-2018-19149

A vulnerability in the _poppler_attachment_new function of Poppler could allow a local attacker to cause a denial of service (DoS) condition on a targeted system.The vulnerability is due to a NULL pointer dereference condition that could occur in the _poppler_attachment_new function of the affected software when a call is made from the poppler_annot_file_attachment_get_attachment function. An attacker could exploit this vulnerability by executing a file or application that submits malicious input to the targeted system. A successful exploit could result in a DoS condition.Proof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available.Poppler 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 may 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

  • Poppler has released an issue report at the following link: Issue #664

Fixed Software

  • Poppler has released software updates at the following link: Poppler 0.70.

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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