SB2018111527 - Fedora 28 update for mupdf

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Main Vulnerability Database SB2018111527

SB2018111527 - Fedora 28 update for mupdf

Published: November 15, 2018 Updated: April 24, 2025

Security Bulletin ID SB2018111527
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 67% Low 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2018-16648)

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

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (segmentation fault) via a crafted pdf file.


2) Buffer overflow (CVE-ID: CVE-2018-16647)

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

In Artifex MuPDF 1.13.0, the pdf_get_xref_entry function in pdf/pdf-xref.c allows remote attackers to cause a denial of service (segmentation fault in fz_write_data in fitz/output.c) via a crafted pdf file.


3) Out-of-bounds read (CVE-ID: CVE-2018-18662)

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

The vulnerability exists due to out-of-bounds read in fz_run_t3_glyph in fitz/font.c when handling malicious input. A remote attacker can send specially crafted .pdf file, trigger out-of-bounds read and cause the application to crash.


Remediation

Install update from vendor's website.

References