CVE-2018-16841

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Summary

CVECVE-2018-16841
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-11-28 14:29:00 UTC
Updated2022-08-29 20:04:00 UTC
DescriptionSamba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.

Risk And Classification

Problem Types: CWE-415

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 12.04 All All All
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 18.10 All All All
Operating System Canonical Ubuntu Linux 12.04 All All All
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Canonical Ubuntu Linux 16.04 All All All
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 18.10 All All All
Operating System Debian Debian Linux 9.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Application Samba Samba All All All All
Application Samba Samba All All All All

References

ReferenceSourceLinkTags
Debian -- Security Information -- DSA-4345-1 samba DEBIAN www.debian.org Third Party Advisory
USN-3827-1: Samba vulnerabilities | Ubuntu security notices | Ubuntu UBUNTU usn.ubuntu.com Third Party Advisory
USN-3827-2: Samba vulnerabilities | Ubuntu security notices UBUNTU usn.ubuntu.com Third Party Advisory
Samba - Security Announcement Archive CONFIRM www.samba.org Patch, Vendor Advisory
1642545 – (CVE-2018-16841) CVE-2018-16841 samba: Double-free in Samba AD DC KDC with PKINIT CONFIRM bugzilla.redhat.com Issue Tracking, Third Party Advisory
November 2018 Samba Vulnerabilities in NetApp StorageGRID Products | NetApp Product Security CONFIRM security.netapp.com Third Party Advisory
Samba: Multiple vulnerabilities (GLSA 202003-52) — Gentoo security GENTOO security.gentoo.org
Samba CVE-2018-16841 Remote Denial of Service Vulnerability BID www.securityfocus.com Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 500637 Alpine Linux Security Update for samba
  • 504401 Alpine Linux Security Update for samba
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