CVE-2018-20751 Null dereference in n/a
A crafted PDF document triggers a NULL pointer dereference in PoDoFo, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2018-20751?
CVE-2018-20751 is a high-severity vulnerability in Podofo Project Podofo, published on 4 Feb 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-476
Which versions are affected by CVE-2018-20751?
It affects 1 product.
Products include Podofo Project Podofo.
How do I fix CVE-2018-20751?
Upgrade to a fixed version.
Is CVE-2018-20751 being exploited?
There is no known exploitation of CVE-2018-20751 in the wild and no public exploit code.
Other vulnerabilities in Podofo Project Podofo
Sources
Also known as DEBIAN-CVE-2018-20751, GHSA-crhg-hr6g-j2xf, UBUNTU-CVE-2018-20751.