CVE-2020-10994 Out-of-bounds reads in Pillow

What is CVE-2020-10994?

CVE-2020-10994 is a medium-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 25 Jun 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

In libImaging/Jpeg2KDecode.c in Pillow before 7.1.0, there are multiple out-of-bounds reads via a crafted JP2 file.

Weakness: CWE-125

Which versions are affected by CVE-2020-10994?

4 open source packages ship an affected version, including pillow. It affects 3 products.

Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Python Pillow.

How do I fix CVE-2020-10994?

Upgrade pillow to a fixed version for your release line: 7.1.0 or 7.0.0.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-10994 being exploited?

There is no known exploitation of CVE-2020-10994 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-pillow-2020-10994, DEBIAN-CVE-2020-10994, GHSA-vj42-xq3r-hr3r, PYSEC-2020-79, UBUNTU-CVE-2020-10994.