NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package samba (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UBUNTU1204-SAMBA-357104
- published2 Dec 2018
- disclosed28 Nov 2018
Introduced: 28 Nov 2018
CVE-2018-16851 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:12.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream samba package and not the samba package as distributed by Ubuntu.
Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-16851
- https://www.samba.org/samba/security/CVE-2018-16851.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16851
- https://www.debian.org/security/2018/dsa-4345
- https://lists.debian.org/debian-lts-announce/2018/12/msg00005.html
- https://security-tracker.debian.org/tracker/CVE-2018-16851
- https://security.gentoo.org/glsa/202003-52
- https://security.netapp.com/advisory/ntap-20181127-0001/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851
- http://www.securityfocus.com/bid/106027
- https://usn.ubuntu.com/3827-1/
- https://usn.ubuntu.com/3827-2/