CVE-2020-35653 Pillow Out-of-bounds Read
A buffer over-read in Pillow allows attackers to cause denial of service or read sensitive memory via crafted PCX 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-2020-35653?
CVE-2020-35653 is a high-severity memory corruption vulnerability in Debian Debian Linux, 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, PcxDecode has a buffer over-read when decoding a crafted PCX file because the user-supplied stride value is trusted for buffer calculations.
Weakness: CWE-125
Which versions are affected by CVE-2020-35653?
4 open source packages ship an affected version, including pillow. It affects 3 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 Debian Debian Linux, Fedoraproject Fedora, Python Pillow.
How do I fix CVE-2020-35653?
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-2020-35653 being exploited?
There is no known exploitation of CVE-2020-35653 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2020-35653, BIT-pillow-2020-35653, DEBIAN-CVE-2020-35653, GHSA-f5g8-5qq7-938w, OESA-2021-1070, PYSEC-2021-69 and 2 more.