Vulnerability identifier: #VU10945

Vulnerability risk: Low

CVSSv3.1: 3.6 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-7999

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Graphite2
Client/Desktop applications / Software for system administration

Vendor: SIL Non-Roman Script Initiative

Description
The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the Segment.cpp code due to NULL pointer dereference. A local attacker can submit a crafted font type file, trigger memory corruption and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Graphite2: 1.3.11.0

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External links
http://github.com/silnrsi/graphite/issues/22

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.