CVE-2018-7173 : Security Advisory and Response
Learn about CVE-2018-7173, a vulnerability in xpdf 4.00 that allows attackers to trigger denial of service through improper decoding. Find out about affected systems, exploitation mechanisms, and mitigation steps.
This CVE-2018-7173 article provides insights into a vulnerability in xpdf 4.00 that can lead to denial of service attacks.
Understanding CVE-2018-7173
This CVE involves a vulnerability in the JBIG2Stream::readSymbolDictSeg function in xpdf 4.00, allowing attackers to trigger denial of service through improper decoding.
What is CVE-2018-7173?
The JBIG2Stream::readSymbolDictSeg function in xpdf 4.00 contains a significant loop that can be exploited by attackers to cause a denial of service by using a specific file.
The Impact of CVE-2018-7173
The vulnerability can be exploited by attackers to trigger denial of service attacks on systems running xpdf 4.00.
Technical Details of CVE-2018-7173
Vulnerability Description
A large loop in JBIG2Stream::readSymbolDictSeg in xpdf 4.00 allows an attacker to cause denial of service via a specific file due to inappropriate decoding.
Affected Systems and Versions
- Product: xpdf 4.00
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
Attackers can exploit the vulnerability by using a particular file that triggers improper decoding, leading to denial of service.
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Consider using alternative PDF readers until the vulnerability is patched.
Long-Term Security Practices
- Regularly update software and applications to mitigate potential vulnerabilities.
- Implement network security measures to detect and prevent exploitation attempts.
Patching and Updates
- Monitor vendor advisories for patches and updates related to CVE-2018-7173.