CVE-2021-25290 Out-of-bounds Write in Pillow
A negative-offset memcpy in Pillow's TIFF decoder allows attackers to cause memory corruption, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-25290?
CVE-2021-25290 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 19 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is a negative-offset memcpy with an invalid size.
Weakness: CWE-787
Which versions are affected by CVE-2021-25290?
4 open source packages ship an affected version, including pillow. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
pillow Bitnami | All versions | 8.1.1 |
pillow PyPI | All versions | 8.1.1 |
pillow PyPI | All versions | 8.1.1 |
pillow PyPI | All versions | 8.1.1 |
Products include Debian Debian Linux, Python Pillow.
How do I fix CVE-2021-25290?
Upgrade pillow to 8.1.1 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-25290 being exploited?
There is no known exploitation of CVE-2021-25290 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2021-25290, BIT-pillow-2021-25290, DEBIAN-CVE-2021-25290, GHSA-8xjq-8fcg-g5hw, PYSEC-2021-36, ROOT-APP-PYPI-CVE-2021-25290 and 1 more.