Resource exhaustion in QPDF - CVE-2017-11624
Published: May 14, 2018
Vulnerability identifier: #VU12619
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-11624
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the QPDFTokenizer::resolveLiteral function in QPDFTokenizer.cc due to infinite loop after two consecutive calls to QPDFObjectHandle::parseInterna. A remote attacker can trick the victim into opening a specially crafted file, trigger stack consumption and cause the service to crash.
The weakness exists in the QPDFTokenizer::resolveLiteral function in QPDFTokenizer.cc due to infinite loop after two consecutive calls to QPDFObjectHandle::parseInterna. A remote attacker can trick the victim into opening a specially crafted file, trigger stack consumption and cause the service to crash.
Affected software
QPDF
Fedora
qpdf (Alpine package)
qpdf
Fedora
qpdf (Alpine package)
qpdf
How to mitigate CVE-2017-11624
Install update from vendor's website.
qpdf - addressed in versions 5.1.1-3.el6, 5.1.1-6.el6, 6.0.0-4.fc25, 6.0.0-6.fc26