CVE-2019-9878 : Security Advisory and Response
Learn about CVE-2019-9878, a vulnerability in Xpdf 4.0.0 affecting pdfalto 0.2, allowing attackers to trigger a Denial of Service by exploiting an invalid memory access issue in GfxIndexedColorSpace::mapColorToBase(). Take immediate steps and follow long-term security practices for mitigation.
Xpdf 4.0.0, as used in pdfalto 0.2, contains a vulnerability in the function GfxIndexedColorSpace::mapColorToBase() in GfxState.cc, leading to an invalid memory access. This flaw can be exploited by sending a maliciously crafted PDF file to the pdftops binary, potentially resulting in a Denial of Service (Segmentation fault) or other unspecified consequences.
Understanding CVE-2019-9878
This CVE entry describes a vulnerability in Xpdf 4.0.0 that affects pdfalto 0.2, allowing an attacker to trigger a Denial of Service or other impacts through a carefully crafted PDF file.
What is CVE-2019-9878?
The vulnerability in Xpdf 4.0.0's GfxIndexedColorSpace::mapColorToBase() function can lead to an invalid memory access when processing PDF files in pdfalto 0.2.
The Impact of CVE-2019-9878
Exploiting this vulnerability can result in a Denial of Service (Segmentation fault) or potentially cause other unspecified consequences by sending a specially crafted PDF file to the pdftops binary.
Technical Details of CVE-2019-9878
Xpdf 4.0.0's vulnerability in GfxIndexedColorSpace::mapColorToBase() function can have severe consequences when exploited.
Vulnerability Description
The flaw allows for an invalid memory access in Xpdf 4.0.0, impacting pdfalto 0.2, by manipulating PDF files.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by sending a carefully crafted PDF file to the pdftops binary, triggering a Denial of Service or other unspecified outcomes.
Mitigation and Prevention
To address CVE-2019-9878, immediate steps and long-term security practices are recommended.
Immediate Steps to Take
- Apply vendor patches or updates promptly.
- Exercise caution when handling PDF files from untrusted sources.
Long-Term Security Practices
- Regularly update software and applications to mitigate known vulnerabilities.
- Implement network security measures to detect and prevent malicious PDF files.
Patching and Updates
Ensure that Xpdf and pdfalto are updated to the latest versions to patch the vulnerability and enhance security.