CVE-2017-18206: Buffer Overflow
First published: Tue Feb 27 2018(Updated: )
A flaw was found in zsh prior 5.3.1. There was no check when copying to the internal xbuf2 for a preliminary test. References: <a href="https://sourceforge.net/p/zsh/code/ci/c7a9cf465dd620ef48d586026944d9bd7a0d5d6d">https://sourceforge.net/p/zsh/code/ci/c7a9cf465dd620ef48d586026944d9bd7a0d5d6d</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zsh Zsh | <5.4 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =17.10 | |
| redhat/zsh | <5.4 | 5.4 |
| debian/zsh | 5.8-6+deb11u1 5.9-4 5.9-8 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2018:1932
- https://access.redhat.com/errata/RHSA-2018:3073
- https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html
- https://security.gentoo.org/glsa/201805-10
- https://sourceforge.net/p/zsh/code/ci/c7a9cf465dd620ef48d586026944d9bd7a0d5d6d
- https://usn.ubuntu.com/3593-1/
- https://launchpad.net/bugs/cve/CVE-2017-18206
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1549861#c0
- https://bugzilla.redhat.com/show_bug.cgi?id=1549861
- https://security-tracker.debian.org/tracker/CVE-2017-18206
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18206
- https://nvd.nist.gov/vuln/detail/CVE-2017-18206
- https://ubuntu.com/security/CVE-2017-18206
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2017-18206.
What is the severity of CVE-2017-18206?
The severity of CVE-2017-18206 is critical (9.8).
Which software versions are affected?
The affected software versions include zsh before 5.4.
How can I fix CVE-2017-18206?
To fix CVE-2017-18206, update zsh to version 5.4 or higher.
Where can I find more information about CVE-2017-18206?
You can find more information about CVE-2017-18206 in the references provided: [Reference 1](https://access.redhat.com/errata/RHSA-2018:1932), [Reference 2](https://access.redhat.com/errata/RHSA-2018:3073), [Reference 3](https://lists.debian.org/debian-lts-announce/2020/12/msg00000.html).
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