CVE-2020-35654 Pillow Out-of-bounds Write
Heap-based buffer overflow in Pillow's TiffDecode allows attackers to execute arbitrary code or cause denial of service via crafted YCbCr files.
- 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-2020-35654?
CVE-2020-35654 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 12 Jan 2021. 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
In Pillow before 8.1.0, TiffDecode has a heap-based buffer overflow when decoding crafted YCbCr files because of certain interpretation conflicts with LibTIFF in RGBA mode.
Weakness: CWE-787
Which versions are affected by CVE-2020-35654?
4 open source packages ship an affected version, including pillow. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
pillow Bitnami | All versions | 8.1.0 |
pillow PyPI | All versions | 8.1.0 |
pillow PyPI | All versions | 8.1.0 |
pillow PyPI | All versions | 8.1.0 |
Products include Fedoraproject Fedora, Python Pillow.
How do I fix CVE-2020-35654?
Upgrade pillow to 8.1.0 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-35654 being exploited?
There is no known exploitation of CVE-2020-35654 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2020-35654, BIT-pillow-2020-35654, DEBIAN-CVE-2020-35654, GHSA-vqcj-wrf2-7v73, PYSEC-2021-70, ROOT-APP-PYPI-CVE-2020-35654 and 1 more.