Denial of service in libgxps

1) Stack-based buffer over-read

EUVDB-ID: #VU12748

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:U/RC:U]

CVE-ID: CVE-2018-10767

CWE-ID: CWE-126 - Buffer over-read

Exploit availability: No

Description

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

The weakness exists in the gxps_images_guess_content_type function due to improper rejection of negative return values from a g_input_stream_read call. A remote attacker can submit a specially crafted request, trigger stack-based buffer overread when calling GLib in the gxps_images_guess_content_typefunction, as defined in the gxps-images.c source code file, and cause the service to crash.

Mitigation

Cybersecurity is currently unaware of any solutions addressing the vulnerability.

Vulnerable software versions

libgxps: 0.1 - 0.3

External links

http://bugzilla.redhat.com/show_bug.cgi?id=1575188

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.