Vulnerability identifier: #VU19191

Vulnerability risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2017-8871

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: Gnome Development Team

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop and CPU consumption in the "cr_parser_parse_selector_core" function, as defined in the "src/cr-parser.c" file . A remote attacker can persuade a user to access a file that submits malicious input to the system and cause a DoS condition.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libcroco: 0.6.12

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External links
http://bugzilla.gnome.org/show_bug.cgi?id=782649

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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. However, proof of concept for this vulnerability is available.