CVE-2020-35702 Memory corruption in n/a
Heap-based buffer overflow in Poppler's DCTStream allows attackers to execute arbitrary code or cause denial of service 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
- None listed
What is CVE-2020-35702?
CVE-2020-35702 is a high-severity memory corruption vulnerability in Freedesktop Poppler, published on 25 Dec 2020. 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
DCTStream::getChars in DCTStream.cc in Poppler 20.12.1 has a heap-based buffer overflow via a crafted PDF document. NOTE: later reports indicate that this only affects builds from Poppler git clones in late December 2020, not the 20.12.1 release. In this situation, it should NOT be considered a Poppler vulnerability. However, several third-party Open Source projects directly rely on Poppler git clones made at arbitrary times, and therefore the CVE remains useful to users of those projects
Weakness: CWE-787
Which versions are affected by CVE-2020-35702?
It affects 1 product.
Products include Freedesktop Poppler.
How do I fix CVE-2020-35702?
No fix has been published for CVE-2020-35702 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-35702 being exploited?
There is no known exploitation of CVE-2020-35702 in the wild and no public exploit code.
Other vulnerabilities in Freedesktop Poppler
Sources
Also known as GHSA-fcqx-5rp6-c5pj.