CVE-2018-6540
First published: Fri Feb 02 2018(Updated: )
In ZZIPlib 0.13.67, there is a bus error caused by loading of a misaligned address in the zzip_disk_findfirst function of zzip/mmapped.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.
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/gdraheim/zziplib/issues/15
- https://lists.debian.org/debian-lts-announce/2020/06/msg00029.html
- https://usn.ubuntu.com/3699-1/
- https://launchpad.net/bugs/cve/CVE-2018-6540
- https://github.com/gdraheim/zziplib/commit/72ec933663f738d8e166979aa7fd5590b2104a07
- https://security-tracker.debian.org/tracker/CVE-2018-6540
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6540
- https://nvd.nist.gov/vuln/detail/CVE-2018-6540
- https://ubuntu.com/security/CVE-2018-6540
Frequently Asked Questions
What is the severity of CVE-2018-6540?
CVE-2018-6540 has a medium severity level due to the potential for denial of service attacks.
How do I fix CVE-2018-6540?
To resolve CVE-2018-6540, upgrade to a version of zziplib that is higher than 0.13.67.
What could happen if CVE-2018-6540 is exploited?
Exploitation of CVE-2018-6540 can lead to a crash of the application, resulting in denial of service.
Which versions of zziplib are affected by CVE-2018-6540?
ZZIPlib versions up to and including 0.13.67 are affected by CVE-2018-6540.
Are there any known workarounds for CVE-2018-6540?
There are no known workarounds for CVE-2018-6540 other than upgrading the affected package.
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