CVE-2020-18839 : Exploit Details and Defense Strategies

CVE-2020-18839 is a Buffer Overflow vulnerability in HtmlOutputDev::page in poppler 0.75.0 that allows attackers to cause a denial of service.

Understanding CVE-2020-18839

This CVE identifies a specific vulnerability in the poppler software.

What is CVE-2020-18839?

The CVE-2020-18839 vulnerability is related to a Buffer Overflow issue in the HtmlOutputDev::page function within poppler 0.75.0, which can be exploited by attackers to trigger a denial of service.

The Impact of CVE-2020-18839

This vulnerability can lead to a denial of service, potentially disrupting the normal operation of the affected system.

Technical Details of CVE-2020-18839

This section provides more technical insights into the CVE-2020-18839 vulnerability.

Vulnerability Description

The vulnerability arises from a Buffer Overflow in the HtmlOutputDev::page function within poppler 0.75.0.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: poppler 0.75.0

Exploitation Mechanism

Attackers can exploit this vulnerability to trigger a denial of service by causing a Buffer Overflow in the HtmlOutputDev::page function.

Mitigation and Prevention

Protecting systems from CVE-2020-18839 requires specific actions to mitigate the risks.

Immediate Steps to Take

Apply security patches provided by the software vendor.
Monitor for any unusual system behavior that could indicate an ongoing attack.

Long-Term Security Practices

Regularly update software and systems to prevent known vulnerabilities.
Implement network security measures to detect and block malicious activities.

Patching and Updates

Ensure that the affected software, in this case, poppler, is updated to a version that addresses the Buffer Overflow vulnerability.