CVE-2018-10918: Null Pointer Dereference
First published: Tue Aug 14 2018(Updated: )
A null pointer dereference flaw was found in the way samba checked database outputs from the LDB database layer. An authenticated attacker could use this flaw to crash a samba server in an Active Directory Domain Controller configuration. Samba versions before 4.7.9 and 4.8.4 are vulnerable.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Samba Samba | >=4.7.0<4.7.9 | |
| Samba Samba | >=4.8.0<4.8.4 | |
| ubuntu/samba | <2:4.7.6+dfsg~ubuntu-0ubuntu2.2 | 2:4.7.6+dfsg~ubuntu-0ubuntu2.2 |
| ubuntu/samba | <4.7.9<4.8.4 | 4.7.9 4.8.4 |
| debian/samba | 2:4.13.13+dfsg-1~deb11u6 2:4.17.12+dfsg-0+deb12u1 2:4.21.0~rc1+really4.20.4+dfsg-1 |
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Reference Links
- http://www.securityfocus.com/bid/105083
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10918
- https://security.gentoo.org/glsa/202003-52
- https://security.netapp.com/advisory/ntap-20180814-0001/
- https://usn.ubuntu.com/3738-1/
- https://www.samba.org/samba/security/CVE-2018-10918.html
- https://launchpad.net/bugs/cve/CVE-2018-10918
- https://security-tracker.debian.org/tracker/CVE-2018-10918
- https://ubuntu.com/security/notices/USN-3738-1
- https://www.cve.org/CVERecord?id=CVE-2018-10918
- https://nvd.nist.gov/vuln/detail/CVE-2018-10918
- https://ubuntu.com/security/CVE-2018-10918
Frequently Asked Questions
What is CVE-2018-10918?
CVE-2018-10918 is a null pointer dereference flaw in Samba that could allow an authenticated attacker to crash a Samba server in an Active Directory Domain Controller configuration.
Which versions of Samba are affected by CVE-2018-10918?
Samba versions before 4.7.9 and 4.8.4 are vulnerable to CVE-2018-10918.
How can an attacker exploit CVE-2018-10918?
An authenticated attacker can exploit CVE-2018-10918 by using the null pointer dereference flaw in Samba to crash a server in an Active Directory Domain Controller configuration.
Is there a fix available for CVE-2018-10918?
Yes, the fix for CVE-2018-10918 is included in Samba versions 4.7.9 and 4.8.4.
Where can I find more information about CVE-2018-10918?
You can find more information about CVE-2018-10918 on the following websites: [SecurityFocus](http://www.securityfocus.com/bid/105083), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10918), and [Gentoo Security](https://security.gentoo.org/glsa/202003-52).
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