NULL Pointer Dereference Affecting podofo package, versions <0.9.7-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about NULL Pointer Dereference vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-ALPINE313-PODOFO-1069254
- published2 Feb 2021
- disclosed4 Feb 2019
Introduced: 4 Feb 2019
CVE-2018-20751 (opens in a new tab)How to fix?
Upgrade Alpine:3.13 podofo to version 0.9.7-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream podofo package and not the podofo package as distributed by Alpine.
See How to fix? for Alpine:3.13 relevant fixed versions and status.
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.