Vulnerability identifier: #VU16331

Vulnerability risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-19876

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cairo
Universal components / Libraries / Libraries used by multiple products

Vendor: cairographics

Description

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

The vulnerability exists in the cairo_ft_apply_variations() function, as defined in the cairo-ft-font.c source code file due to an error when processing malicious input. A remote attacker can attempt to free memory by using a free function that is incompatible with WebKit's fastMalloc and cause the application to crash, resulting in a DoS condition.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cairo: 1.15.0 - 1.16.0

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External links
http://bugs.webkit.org/show_bug.cgi?id=191595
http://gitlab.freedesktop.org/cairo/cairo/merge_requests/5

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.