CVE-2021-27815: Null Pointer Dereference
First published: Wed Apr 14 2021(Updated: )
NULL Pointer Deference in the exif command line tool, when printing out XML formatted EXIF data, in exif v0.6.22 and earlier allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the application to crash.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libexif Project Exif | <=0.6.22 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 |
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Reference Links
- https://github.com/libexif/exif/commit/eb84b0e3c5f2a86013b6fcfb800d187896a648fa
- https://github.com/libexif/exif/commit/f6334d9d32437ef13dc902f0a88a2be0063d9d1c
- https://github.com/libexif/exif/issues/4
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JSWAXZVNXYLV3E4R6YQTEGRGMGWEAR76/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMC6OTXZRPCUD3LOSWO4ISR7CH7NJQDT/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZQ3L45F7S7PQPG5HEHXOCGNOO64MJOS/
- https://security.gentoo.org/glsa/202210-28
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSWAXZVNXYLV3E4R6YQTEGRGMGWEAR76/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZQ3L45F7S7PQPG5HEHXOCGNOO64MJOS/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMC6OTXZRPCUD3LOSWO4ISR7CH7NJQDT/
Frequently Asked Questions
What is CVE-2021-27815?
CVE-2021-27815 is a vulnerability that allows attackers to cause a Denial of Service (DoS) by uploading a malicious JPEG file, causing the exif command line tool to crash.
What software is affected by CVE-2021-27815?
The Libexif Project Exif version 0.6.22 and earlier, as well as Fedora versions 32, 33, and 34, are affected by CVE-2021-27815.
How severe is CVE-2021-27815?
CVE-2021-27815 has a severity rating of 5.5, which is classified as medium.
How can I fix CVE-2021-27815?
To fix CVE-2021-27815, update to a version of exif that includes the following commits: eb84b0e3c5f2a86013b6fcfb800d187896a648fa and f6334d9d32437ef13dc902f0a88a2be0063d9d1c.
What is the Common Weakness Enumeration (CWE) for CVE-2021-27815?
The Common Weakness Enumeration (CWE) for CVE-2021-27815 is CWE-476: NULL Pointer Dereference.
- collector/nvd-index
- agent/severity
- agent/references
- agent/weakness
- agent/author
- agent/description
- agent/event
- agent/type
- agent/remedy
- agent/last-modified-date
- agent/first-publish-date
- agent/tags
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- vendor/libexif project
- canonical/libexif project exif
- version/libexif project exif/0.6.22
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/32
- version/fedoraproject fedora/33
- version/fedoraproject fedora/34