#VU16354 NULL pointer dereference in Gnome GLib - CVE-2018-16428

Vulnerability identifier: #VU16354

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-16428

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Gnome GLib
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team

Description

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

The vulnerability exists due to NULL pointer dereference in g_markup_parse_context_end_parse() in gmarkup.c. A local attacker can execute a specially crafted application or file that submits malicious input and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Gnome GLib: 2.56.1

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External links
https://gitlab.gnome.org/GNOME/glib/issues/1364

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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.