CVE-2021-28678: Input Validation
First published: Thu Apr 01 2021(Updated: )
An issue was discovered in Pillow before 8.2.0. For BLP data, BlpImagePlugin did not properly check that reads (after jumping to file offsets) returned data. This could lead to a DoS where the decoder could be run a large number of times on empty data.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/python-pillow | <0:5.1.1-16.el8 | 0:5.1.1-16.el8 |
| Python Pillow | <8.2.0 | |
| Fedoraproject Fedora | =33 | |
| pip/Pillow | >=5.1.0<8.2.0 | 8.2.0 |
Remedy
To mitigate this feature on Red Hat Quay keep the invoice generation feature disabled, as it is by default.
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2021-28678
- https://github.com/python-pillow/Pillow/pull/5377
- https://github.com/python-pillow/Pillow/pull/5377/commits/496245aa4365d0827390bd0b6fbd11287453b3a1
- https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28678-fix-blp-dos
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
- https://security.gentoo.org/glsa/202107-33
- https://github.com/advisories/GHSA-hjfx-8p6c-g7gx (Advisory)
- https://www.cve.org/CVERecord?id=CVE-2021-28678 https://nvd.nist.gov/vuln/detail/CVE-2021-28678
- https://bugzilla.redhat.com/show_bug.cgi?id=1958263
- https://access.redhat.com/errata/RHSA-2021:4149
- https://access.redhat.com/security/cve/cve-2021-28678
- https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#security
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1958267
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1958264
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1958265
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1958266
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
- https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-94.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL
Frequently Asked Questions
What is CVE-2021-28678?
CVE-2021-28678 is a vulnerability found in the python-pillow library, allowing for a Denial of Service (DoS) attack by running the decoder on empty data.
What is the severity of CVE-2021-28678?
CVE-2021-28678 has a severity score of 7.5, which is considered high.
How do I fix CVE-2021-28678?
To fix CVE-2021-28678, you should update python-pillow to version 8.2.0 or higher.
Where can I find more information about CVE-2021-28678?
You can find more information about CVE-2021-28678 in the following references: [https://www.cve.org/CVERecord?id=CVE-2021-28678](https://www.cve.org/CVERecord?id=CVE-2021-28678), [https://nvd.nist.gov/vuln/detail/CVE-2021-28678](https://nvd.nist.gov/vuln/detail/CVE-2021-28678), [https://bugzilla.redhat.com/show_bug.cgi?id=1958263](https://bugzilla.redhat.com/show_bug.cgi?id=1958263), [https://access.redhat.com/errata/RHSA-2021:4149](https://access.redhat.com/errata/RHSA-2021:4149).
What is the Common Weakness Enumeration (CWE) of CVE-2021-28678?
CVE-2021-28678 is associated with CWE-20 (Improper Input Validation) and CWE-345 (Insufficient Verification of Data Authenticity).
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