SB2017051913 - Fedora 25 update for mupdf

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Out-of-bounds write (CVE-ID: CVE-2016-8728)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

An exploitable heap out of bounds write vulnerability exists in the Fitz graphical library part of the MuPDF renderer. A specially crafted PDF file can cause a out of bounds write resulting in heap metadata and sensitive process memory corruption leading to potential code execution. Victim needs to open the specially crafted file in a vulnerable reader in order to trigger this vulnerability.

2) Buffer overflow (CVE-ID: CVE-2016-8729)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

An exploitable memory corruption vulnerability exists in the JBIG2 parser of Artifex MuPDF 1.9. A specially crafted PDF can cause a negative number to be passed to a memset resulting in memory corruption and potential code execution. An attacker can specially craft a PDF and send to the victim to trigger this vulnerability.

3) Integer overflow (CVE-ID: CVE-2017-7885)

The vulnerability allows a remote attacker to obtain potentially sensitive information or cause DoS condition.

The weakness exists due to integer overflow in the jbig2_decode_symbol_dict function in jbig2_symbol_dict.c in libjbig2dec.a during operation on a crafted .jb2 file. A remote attacker can send a specially crafted .jb2 file, trigger heap-based buffer over-read and access arbitrary files from process memory or cause the application to crash.

Successful exploitation of the vulnerability may result in information disclosure or denial of service.

4) Integer overflow (CVE-ID: CVE-2017-7975)

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code.

The weakness exists due to integer overflow in the jbig2_build_huffman_table function in jbig2_huffman.c during operations on a crafted JBIG2 file. A remote attacker can send a specially crafted .jb2 file, trigger out-of-bounds writes and cause the application to crash or execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

5) Integer overflow (CVE-ID: CVE-2017-7976)

The vulnerability allows a remote attacker to obtain potentially sensitive information or cause DoS condition.

The weakness exists due to integer overflow in the jbig2_image_compose function in jbig2_image.c during operations on a crafted .jb2 file. A remote attacker can send a specially crafted .jb2 file, trigger out-of-bounds writes and access arbitrary files from process memory, cause the application to crash or possibly execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Remediation

Install update from vendor's website.

References

• https://bodhi.fedoraproject.org/updates/FEDORA-2017-5135c91b36