An issue was discovered in QPDF before 7.0.0. There is an infinite loop due to looping xref tables in QPDF.cc.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - qpdf: stack exhaustion in QPDFObjectHandle and QPDF_Dictionary classes in libqpdf.a (CVE-2018-9918)

  - An issue was discovered in QPDF before 7.0.0. Endless recursion causes stack exhaustion in     QPDFTokenizer::resolveLiteral() in QPDFTokenizer.cc, related to the QPDF::resolve function in QPDF.cc.
    (CVE-2015-9252)

  - A stack-consumption vulnerability was found in libqpdf in QPDF 6.0.0, which allows attackers to cause a     denial of service via a crafted file, related to the QPDFTokenizer::resolveLiteral function in     QPDFTokenizer.cc after two consecutive calls to QPDFObjectHandle::parseInternal, aka an infinite loop.
    (CVE-2017-11624)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

According to the versions of the qpdf package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in QPDF before 7.0.0. There is     an infinite loop due to looping xref tables in     QPDF.cc.(CVE-2017-18186)

  - libqpdf.a in QPDF 6.0.0 allows remote attackers to     cause a denial of service (infinite recursion and stack     consumption) via a crafted PDF document, related to     unparse functions, aka     qpdf-infiniteloop3.(CVE-2017-9210)

  - libqpdf.a in QPDF 6.0.0 allows remote attackers to     cause a denial of service (infinite recursion and stack     consumption) via a crafted PDF document, related to     QPDFObjectHandle::parseInternal, aka     qpdf-infiniteloop2.(CVE-2017-9209)

  - libqpdf.a in QPDF 6.0.0 allows remote attackers to     cause a denial of service (infinite recursion and stack     consumption) via a crafted PDF document, related to     releaseResolved functions, aka     qpdf-infiniteloop1.(CVE-2017-9208)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the qpdf package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in QPDF before 7.0.0. Endless     recursion causes stack exhaustion in     QPDFTokenizer::resolveLiteral() in QPDFTokenizer.cc,     related to the QPDF::resolve function in     QPDF.cc.(CVE-2015-9252)

  - An issue was discovered in QPDF before 7.0.0. There is     an infinite loop due to looping xref tables in     QPDF.cc.(CVE-2017-18186)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3638-1 advisory.

    It was discovered that QPDF incorrectly handled certain malformed files. A remote attacker could use this     issue to cause QPDF to crash, resulting in a denial of service, or possibly execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
198843	RHEL 7 : qpdf (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
153336	EulerOS 2.0 SP2 : qpdf (EulerOS-SA-2021-2442)	Nessus	Huawei Local Security Checks	medium
132190	EulerOS 2.0 SP3 : qpdf (EulerOS-SA-2019-2655)	Nessus	Huawei Local Security Checks	medium
109600	Ubuntu 14.04 LTS / 16.04 LTS : QPDF vulnerabilities (USN-3638-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2017-18186

medium

Tenable Plugins

high

medium

medium

high