CVE-2019-12493 Memory corruption in n/a
A stack-based buffer over-read in Xpdf allows attackers to cause denial of service or leak memory via crafted PDFs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-12493?
CVE-2019-12493 is a high-severity memory corruption vulnerability in Glyphandcog Xpdfreader, published on 31 May 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A stack-based buffer over-read exists in PostScriptFunction::transform in Function.cc in Xpdf 4.01.01 because GfxSeparationColorSpace and GfxDeviceNColorSpace mishandle tint transform functions. It can, for example, be triggered by sending a crafted PDF document to the pdftops tool. It might allow an attacker to cause Denial of Service or leak memory data.
Weakness: CWE-125
Which versions are affected by CVE-2019-12493?
It affects 1 product.
Products include Glyphandcog Xpdfreader.
How do I fix CVE-2019-12493?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-12493 being exploited?
There is no known exploitation of CVE-2019-12493 in the wild and no public exploit code.
Other vulnerabilities in Glyphandcog Xpdfreader
Sources
Also known as DEBIAN-CVE-2019-12493, GHSA-2856-2658-h48j, UBUNTU-CVE-2019-12493.