Artifex MuPDF 1.13.0 fitz/buffer.c fz_append_byte PDF File array index

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability has been found in Artifex MuPDF 1.13.0 (Document Reader Software) and classified as problematic. Affected by this vulnerability is the function fz_append_byte of the file fitz/buffer.c. The manipulation as part of a PDF File leads to a array index vulnerability. The CWE definition for the vulnerability is CWE-129. The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array. As an impact it is known to affect availability. The summary by CVE is:

In Artifex MuPDF 1.13.0, the fz_append_byte function in fitz/buffer.c allows remote attackers to cause a denial of service (segmentation fault) via a crafted pdf file. This is caused by a pdf/pdf-device.c pdf_dev_alpha array-index underflow.

The bug was discovered 09/07/2018. The weakness was released 09/06/2018 (Website). It is possible to read the advisory at bugs.ghostscript.com. This vulnerability is known as CVE-2018-16648 since 09/06/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 120623 (Fedora 29 : mupdf (2018-93558de1ac)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (120623). Entries connected to this vulnerability are available at 123690 and 126005.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Array index
CWE: CWE-129 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 120623
Nessus Name: Fedora 29 : mupdf (2018-93558de1ac)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

09/06/2018 🔍
09/06/2018 +0 days 🔍
09/06/2018 +0 days 🔍
09/07/2018 +1 days 🔍
09/07/2018 +0 days 🔍
11/17/2018 +71 days 🔍
01/03/2019 +47 days 🔍
05/07/2023 +1585 days 🔍

Sourcesinfo

Vendor: artifex.com

Advisory: FEDORA-2018-93558de1ac
Status: Not defined

CVE: CVE-2018-16648 (🔍)
See also: 🔍

Entryinfo

Created: 09/07/2018 07:39
Updated: 05/07/2023 13:48
Changes: 09/07/2018 07:39 (71), 03/21/2020 11:08 (3), 05/07/2023 13:41 (4), 05/07/2023 13:48 (1)
Complete: 🔍

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