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Vulnerability record · CVE-2018-20751 · published 4 February 2019

CVE-2018-20751: Podofo project podofo null pointer dereference vulnerability

Podofo Project · Podofo

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.

8.8 CVSS 3.0 High EPSS 1.6% · top 24.6% CWE-476 · NULL pointer dereference
8.8CVSS 3.0 base score, v2 6.8
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://research.loginsoft.com/bugs/null-pointer-dereference-vulnerability-in-crop_page-podofo-0-9-6/ ExploitThird Party Advisory
https://sourceforge.net/p/podofo/tickets/33/ ExploitThird Party Advisory
https://research.loginsoft.com/bugs/null-pointer-dereference-vulnerability-in-crop_page-podofo-0-9-6/ ExploitThird Party Advisory
https://sourceforge.net/p/podofo/tickets/33/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-9687Podofo project podofo out-of-bounds write vulnerabilityPoDoFo 0.9.6 has a heap-based buffer overflow in PdfString::ConvertUTF16toUTF8 in base/PdfString.cpp.EPSS 2.2%9.8CVE-2017-8378Podofo project podofo memory buffer overflow vulnerabilityHeap-based buffer overflow in the PdfParser::ReadObjects function in base/PdfParser.cpp in PoDoFo 0.9.5 allows remote attackers to cause a denial of …EPSS 2.2%9.8CVE-2015-8981Podofo project podofo memory buffer overflow vulnerabilityHeap-based buffer overflow in the PdfParser::ReadXRefSubsection function in base/PdfParser.cpp in PoDoFo allows attackers to have unspecified impact …EPSS 2.6%8.8CVE-2023-31566Podofo project podofo use after free vulnerabilityPodofo v0.10.0 was discovered to contain a heap-use-after-free via the component PoDoFo::PdfEncrypt::IsMetadataEncrypted().EPSS 0.74%8.8CVE-2023-31567Podofo project podofo out-of-bounds write vulnerabilityPodofo v0.10.0 was discovered to contain a heap buffer overflow via the component PoDoFo::PdfEncryptAESV3::PdfEncryptAESV3.EPSS 0.75%8.8CVE-2023-31568Podofo project podofo out-of-bounds write vulnerabilityPodofo v0.10.0 was discovered to contain a heap buffer overflow via the component PoDoFo::PdfEncryptRC4::PdfEncryptRC4.EPSS 0.76%8.8CVE-2019-9199Podofo project podofo null pointer dereference vulnerabilityPoDoFo::Impose::PdfTranslator::setSource() in pdftranslator.cpp in PoDoFo 0.9.6 has a NULL pointer dereference that can (for example) be triggered by…EPSS 2.6%8.8CVE-2018-19532Podofo project podofo null pointer dereference vulnerabilityA NULL pointer dereference vulnerability exists in the function PdfTranslator::setTarget() in pdftranslator.cpp of PoDoFo 0.9.6, while creating the P…EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2018-20751), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.