SB2017050928 - Fedora 26 update for mupdf
Published: May 9, 2017 Updated: April 24, 2025
Security Bulletin ID
SB2017050928
Severity
High
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) 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.
2) 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.
3) 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.