An issue was discovered in crop_page in PoDoFo 0.9.6. For a crafted PDF document, pPage->GetObject()->GetDictionary().AddKey(PdfName("MediaBox"),var) can be problematic due to the function GetObject() being called for the pPage NULL pointer object. The value of pPage at this point is 0x0, which causes a NULL pointer dereference.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in crop_page in PoDoFo 0.9.6. For a crafted PDF document,     pPage->GetObject()->GetDictionary().AddKey(PdfName(MediaBox),var) can be problematic due to the function     GetObject() being called for the pPage NULL pointer object. The value of pPage at this point is 0x0, which     causes a NULL pointer dereference. (CVE-2018-20751)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - PoDoFo 0.9.6 has a heap-based buffer overflow in PdfString::ConvertUTF16toUTF8 in base/PdfString.cpp.
    (CVE-2019-9687)

  - A NULL pointer dereference vulnerability exists in the function PdfTranslator::setTarget() in
    pdftranslator.cpp of PoDoFo 0.9.6, while creating the PdfXObject, as demonstrated by podofoimpose. It
    allows an attacker to cause Denial of Service. (CVE-2018-19532)

  - An issue was discovered in crop_page in PoDoFo 0.9.6. For a crafted PDF document,
    pPage->GetObject()->GetDictionary().AddKey(PdfName("MediaBox"),var) can be problematic due to the function
    GetObject() being called for the pPage NULL pointer object. The value of pPage at this point is 0x0, which
    causes a NULL pointer dereference. (CVE-2018-20751)

  - An issue was discovered in PoDoFo 0.9.6. There is an attempted excessive memory allocation in
    PoDoFo::podofo_calloc in base/PdfMemoryManagement.cpp when called from
    PoDoFo::PdfPredictorDecoder::PdfPredictorDecoder in base/PdfFiltersPrivate.cpp. (CVE-2018-20797)

  - PoDoFo::Impose::PdfTranslator::setSource() in pdftranslator.cpp in PoDoFo 0.9.6 has a NULL pointer
    dereference that can (for example) be triggered by sending a crafted PDF file to the podofoimpose binary.
    It allows an attacker to cause Denial of Service (Segmentation fault) or possibly have unspecified other
    impact. (CVE-2019-9199)

This update for podofo fixes the following issues :

Security issues fixed :

CVE-2017-8054: Fixed a vulnerability in PdfPagesTree::GetPageNodeFromArray function which could allow remote attackers to cause Denial of Service (bsc#1035596).

CVE-2018-5783: Fixed an uncontrolled memory allocation in PdfVecObjects::Reserve function (bsc#1076962).

CVE-2018-11255: Fixed a NULL pointer dereference in PdfPage::GetPageNumber() function which could lead to Denial of Service (bsc#1096890).

CVE-2018-20751: Fixed a NULL pointer dereference in crop_page function (bsc#1124357).

CVE-2018-12982: Fixed an invalid memory read in PdfVariant::DelayedLoad() function which could allow remote attackers to cause Denial of Service (bsc#1099720).

Fixed a buffer overflow in TestEncrypt function.

Fixed a NULL pointer dereference in PdfTranslator-setTarget function.

Fixed a heap-based buffer overflow PdfVariant:DelayedLoad function.

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

This update backports a fix for CVE-2018-20751.

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

ID	Name	Product	Family	Severity
255365	Linux Distros Unpatched Vulnerability : CVE-2018-20751	Nessus	Misc.	high
406435	Alpine: multiple podofo packages: security update to 0.9.7-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	critical
406435	Alpine: multiple podofo packages: security update to 0.9.7-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	critical
126739	SUSE SLED12 Security Update : podofo (SUSE-SU-2019:1849-1)	Nessus	SuSE Local Security Checks	high
122280	Fedora 29 : mingw-podofo / podofo (2019-6cc827b7a1)	Nessus	Fedora Local Security Checks	high

Detections

Analytics

CVE-2018-20751

high

Tenable Plugins

high

critical

critical

high

high