CVE-2017-7885 : What You Need to Know

A vulnerability in Artifex jbig2dec 0.13 has been identified, leading to a heap-based buffer over-read that can result in a denial of service or the disclosure of sensitive information. The issue stems from an integer overflow in the jbig2_decode_symbol_dict function.

Understanding CVE-2017-7885

Artifex jbig2dec 0.13 vulnerability with potential denial of service or information disclosure.

What is CVE-2017-7885?

The vulnerability in Artifex jbig2dec 0.13 can trigger a heap-based buffer over-read, potentially causing a denial of service (application crash) or exposing sensitive data from process memory. The flaw originates from an integer overflow in the jbig2_decode_symbol_dict function within the libjbig2dec.a library when processing a specially crafted .jb2 file.

The Impact of CVE-2017-7885

Affects the confidentiality and integrity of sensitive information stored in process memory
May lead to a denial of service by crashing the application

Technical Details of CVE-2017-7885

Artifex jbig2dec 0.13 vulnerability specifics.

Vulnerability Description

The vulnerability involves a heap-based buffer over-read due to an integer overflow in the jbig2_decode_symbol_dict function within the libjbig2dec.a library.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by processing a specifically crafted .jb2 file, triggering the integer overflow in the jbig2_decode_symbol_dict function.

Mitigation and Prevention

Protecting systems from CVE-2017-7885.

Immediate Steps to Take

Apply vendor patches or updates if available
Avoid processing untrusted .jb2 files

Long-Term Security Practices

Regularly update software and libraries
Implement secure coding practices to prevent buffer overflows

Patching and Updates

Check for security advisories from relevant vendors
Apply patches promptly to mitigate the vulnerability