CVE-2018-6381: Buffer Overflow
First published: Mon Jan 29 2018(Updated: )
In ZZIPlib 0.13.67, 0.13.66, 0.13.65, 0.13.64, 0.13.63, 0.13.62, 0.13.61, 0.13.60, 0.13.59, 0.13.58, 0.13.57 and 0.13.56 there is a segmentation fault caused by invalid memory access in the zzip_disk_fread function (zzip/mmapped.c) because the size variable is not validated against the amount of file->stored data.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/zziplib | 0.13.62-3.3+deb11u1 0.13.72+dfsg.1-1.1 0.13.72+dfsg.1-1.2 0.13.72+dfsg.1-1.3 | |
| zziplib | =0.13.67 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =17.10 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =17.10 | |
| Ubuntu | =18.04 |
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Reference Links
- https://github.com/Hack-Me/Pocs_for_Multi_Versions/tree/main/CVE-2018-6381
- https://github.com/gdraheim/zziplib/issues/12
- https://lists.debian.org/debian-lts-announce/2020/06/msg00029.html
- https://usn.ubuntu.com/3699-1/
- https://launchpad.net/bugs/cve/CVE-2018-6381
- https://github.com/gdraheim/zziplib/commit/a803559fa9194be895422ba3684cf6309b6bb598
- https://security-tracker.debian.org/tracker/CVE-2018-6381
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6381
- https://nvd.nist.gov/vuln/detail/CVE-2018-6381
- https://ubuntu.com/security/CVE-2018-6381
Frequently Asked Questions
What is the severity of CVE-2018-6381?
CVE-2018-6381 has a medium severity rating due to potential denial of service from segmentation faults.
How do I fix CVE-2018-6381?
To fix CVE-2018-6381, upgrade ZZIPlib to version 0.13.72+dfsg.1-1.3 or later.
Which versions of ZZIPlib are affected by CVE-2018-6381?
ZZIPlib versions from 0.13.56 to 0.13.67 are affected by CVE-2018-6381.
What causes the vulnerability in CVE-2018-6381?
CVE-2018-6381 is caused by invalid memory access in the zzip_disk_fread function due to a lack of size validation.
Is CVE-2018-6381 specific to any operating system?
CVE-2018-6381 affects multiple operating systems including various versions of Ubuntu and Debian.
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