QPDF 6.0.0 libqpdf PointerHolder.hh PointerHolder memory corruption

Summaryinfo

A vulnerability was found in QPDF 6.0.0. It has been rated as problematic. This vulnerability affects the function PointerHolder of the file PointerHolder.hh of the component libqpdf. This manipulation causes memory corruption. This vulnerability appears as CVE-2017-11627. The attack requires local access. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in QPDF 6.0.0 and classified as problematic. Affected by this vulnerability is the function PointerHolder of the file PointerHolder.hh of the component libqpdf. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. The summary by CVE is:

A stack-consumption vulnerability was found in libqpdf in QPDF 6.0.0, which allows attackers to cause a denial of service via a crafted file, related to the PointerHolder function in PointerHolder.hh, aka an "infinite loop."

The bug was discovered 06/04/2017. The weakness was presented 07/25/2017 (Website). It is possible to read the advisory at somevulnsofadlab.blogspot.jp. This vulnerability is known as CVE-2017-11627 since 07/25/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 51 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 102215 (Fedora 26 : qpdf (2017-e58a762c3f)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171628 (SUSE Enterprise Linux Security Update for qpdf (SUSE-SU-2018:3066-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (102215). See VDB-101717, VDB-101718, VDB-101719 and VDB-104500 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• QPDF

Version

• 6.0.0

CPE 2.3info

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• 🔍

CPE 2.2info

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• 🔍

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Be aware that VulDB is the high quality source for vulnerability data.

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