CVE-2020-12767: Divide by Zero
First published: Sat May 09 2020(Updated: )
exif_entry_get_value in exif-entry.c in libexif 0.6.21 has a divide-by-zero error.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libexif Project Libexif | =0.6.21 | |
| Debian Debian Linux | =8.0 | |
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.10 | |
| Canonical Ubuntu Linux | =20.04 | |
| openSUSE Leap | =15.1 | |
| debian/libexif | 0.6.22-3 0.6.24-1 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00017.html
- https://github.com/libexif/libexif/issues/31
- https://lists.debian.org/debian-lts-announce/2020/05/msg00016.html
- https://security.gentoo.org/glsa/202007-05
- https://usn.ubuntu.com/4358-1/
- https://launchpad.net/bugs/cve/CVE-2020-12767
- https://github.com/libexif/libexif/commit/e22f73064f804c94e90b642cd0db4697c827da72
- https://security-tracker.debian.org/tracker/CVE-2020-12767
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12767
- https://nvd.nist.gov/vuln/detail/CVE-2020-12767
- https://ubuntu.com/security/CVE-2020-12767
Frequently Asked Questions
What is CVE-2020-12767?
CVE-2020-12767 is a vulnerability in libexif 0.6.21 that has a divide-by-zero error in the exif_entry_get_value function.
How severe is CVE-2020-12767?
CVE-2020-12767 has a severity rating of medium, with a CVSS score of 5.5.
Which versions of libexif are affected by CVE-2020-12767?
Versions 0.6.21-4ubuntu0.2, 0.6.21-5.1ubuntu0.2, 0.6.21-6ubuntu0.1, 0.6.21-1ubuntu1+, and 0.6.21-2ubuntu0.2 of libexif are affected by CVE-2020-12767.
How can I fix CVE-2020-12767?
To fix CVE-2020-12767, update libexif to version 0.6.21-4ubuntu0.2, 0.6.21-5.1ubuntu0.2, 0.6.21-6ubuntu0.1, 0.6.21-1ubuntu1+, or 0.6.21-2ubuntu0.2, depending on your Ubuntu distribution.
Where can I find more information about CVE-2020-12767?
You can find more information about CVE-2020-12767 in the following references: [GitHub issue](https://github.com/libexif/libexif/issues/31), [Debian LTS announcement](https://lists.debian.org/debian-lts-announce/2020/05/msg00016.html), [Ubuntu security notice](https://usn.ubuntu.com/4358-1/)
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