graphite2 1.3.11 libgraphite2 Segment.cpp TTF File null pointer dereference

Summaryinfo

A vulnerability identified as problematic has been detected in graphite2 1.3.11. This affects an unknown part of the file Segment.cpp of the component libgraphite2. The manipulation as part of TTF File leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2018-7999. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in graphite2 1.3.11. This issue affects some unknown functionality of the file Segment.cpp of the component libgraphite2. The manipulation as part of a TTF File leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

In libgraphite2 in graphite2 1.3.11, a NULL pointer dereference vulnerability was found in Segment.cpp during a dumbRendering operation, which may allow attackers to cause a denial of service or possibly have unspecified other impact via a crafted .ttf file.

The bug was discovered 03/09/2018. The weakness was disclosed 03/09/2018 (Website). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2018-7999 since 03/09/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 scanner Nessus provides a plugin with the ID 109504 (EulerOS 2.0 SP1 : graphite2 (EulerOS-SA-2018-1106)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Huawei Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171074 (OpenSUSE Security Update for graphite2 (openSUSE-SU-2018:0883-1)).

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

The vulnerability is also documented in the vulnerability database at Tenable (109504). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• graphite2

Version

• 1.3.11

License

• open-source

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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