CVE-2021-25289: Buffer Overflow
First published: Sun Feb 28 2021(Updated: )
A flaw was found in python-pillow. TiffDecode has a heap-based buffer overflow when decoding crafted YCbCr files because of certain interpretation conflicts with LibTIFF in RGBA mode. The previous fix for CVE-2020-35654 was insufficient due to incorrect error checking in TiffDecode.c. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Python Pillow | <8.1.1 | |
| redhat/python-pillow | <8.1.1 | 8.1.1 |
| pip/Pillow | =8.1.0 | 8.1.1 |
Remedy
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-25289 https://nvd.nist.gov/vuln/detail/CVE-2021-25289
- https://bugzilla.redhat.com/show_bug.cgi?id=1934680
- https://access.redhat.com/errata/RHSA-2021:3917
- https://access.redhat.com/security/cve/cve-2021-25289
- https://pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html
- https://security.gentoo.org/glsa/202107-33
- https://access.redhat.com/security/cve/CVE-2020-35654
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1934683
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1934681
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1934682
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1934684
- https://github.com/python-pillow/Pillow/commit/3fee28eb9479bf7d59e0fa08068f9cc4a6e2f04c
- https://nvd.nist.gov/vuln/detail/CVE-2021-25289
- https://github.com/python-pillow/Pillow/commit/cbfdde7b1f2295059a20a539ee9960f0bec7b299
- https://github.com/advisories/GHSA-57h3-9rgr-c24m (Advisory)
Frequently Asked Questions
What is CVE-2021-25289?
CVE-2021-25289 is a vulnerability in Pillow, a Python Imaging Library, that allows a heap-based buffer overflow when decoding crafted YCbCr files.
What is the severity of CVE-2021-25289?
The severity of CVE-2021-25289 is critical with a CVSS score of 9.8 out of 10.
How does CVE-2021-25289 affect Pillow?
CVE-2021-25289 affects Pillow by causing a heap-based buffer overflow when decoding certain YCbCr files.
How can I fix CVE-2021-25289?
To fix CVE-2021-25289, upgrade to version 8.1.1 of python-pillow.
Where can I find more information about CVE-2021-25289?
You can find more information about CVE-2021-25289 in the references provided: https://access.redhat.com/security/cve/CVE-2020-35654, https://pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html, and https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1934683.
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