PT-2019-19910 · Xpdf · Xpdf

Published 2019-03-19 · Updated 2021-07-21 · CVE-2019-9877

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Xpdf version 4.01

Description The issue is related to an invalid memory access in the TextPage::findGaps() function, located in TextOutputDev.c. This can be triggered by sending a crafted pdf file to the pdftops binary, potentially allowing an attacker to cause a Denial of Service (Segmentation fault) or have other unspecified impacts.

Recommendations For Xpdf version 4.01, consider disabling the TextPage::findGaps() function as a temporary workaround until a patch is available. Restrict access to the pdftops binary to minimize the risk of exploitation. Avoid using crafted pdf files with the affected binary until the issue is resolved.

Exploit

Fix

Memory Corruption

Out of bounds Read

Weakness Enumeration

CWE-787

CWE-125

Related Identifiers

CVE-2019-9877

Affected Products

Xpdf

References · 7

• 🔥 https://research.loginsoft.com/bugs/invalid-memory-access-in-textpagefindgaps-xpdf-4-01 · Exploit
• https://forum.xpdfreader.com/viewtopic.php?f=3&t=41265 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9877 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-9877 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-9877 · Security Note
• https://osv.dev/vulnerability/CVE-2019-9877 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-9877 · Security Note