SB2018042058 - Fedora EPEL 6 update for qpdf
Published: April 20, 2018 Updated: April 24, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 vulnerabilities.
1) Resource exhaustion (CVE-ID: CVE-2017-11625)
CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the QPDF::resolveObjectsInStream function in QPDF.cc due to infinite loop. A remote attacker can trick the victim into opening a specially crafted file, trigger stack consumption and cause the service to crash.
2) Resource exhaustion (CVE-ID: CVE-2017-11624)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 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/E:U/U:Clear
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.
3) Resource exhaustion (CVE-ID: CVE-2017-12595)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in QPDFObjectHandle::parseInternal in libqpdf/QPDFObjectHandle.cc due to the tokenizer is recursive for arrays and dictionaries. A remote attacker can trick the victim into opening a specially crafted PDF document with a deep data structure, trigger stack consumption and cause the service to crash.
4) Resource exhaustion (CVE-ID: CVE-2018-9918)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the QPDFObjectHandle and QPDF_Dictionary classes due to mishandling certain "expected dictionary key but found non-name object" cases because nesting in direct objects is not restricted. A remote attacker can trigger stack exhaustion and cause the service to crash.
Remediation
Install update from vendor's website.