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CVE-2020-14383

Status Candidate

Overview

A flaw was found in samba's DNS server. An authenticated user could use this flaw to the RPC server to crash. This RPC server, which also serves protocols other than dnsserver, will be restarted after a short delay, but it is easy for an authenticated non administrative attacker to crash it again as soon as it returns. The Samba DNS server itself will continue to operate, but many RPC services will not.

Related Files

Ubuntu Security Notice USN-4931-1
Posted May 4, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4931-1 - Steven French discovered that Samba incorrectly handled ChangeNotify permissions. A remote attacker could possibly use this issue to obtain file name information. Bas Alberts discovered that Samba incorrectly handled certain winbind requests. A remote attacker could possibly use this issue to cause winbind to crash, resulting in a denial of service. Francis Brosnan Blázquez discovered that Samba incorrectly handled certain invalid DNS records. A remote attacker could possibly use this issue to cause the DNS server to crash, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2020-14318, CVE-2020-14323, CVE-2020-14383, CVE-2021-20254
MD5 | 286abb281e576ae65c0aec49bfe9eddc
Gentoo Linux Security Advisory 202012-24
Posted Dec 24, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202012-24 - Multiple vulnerabilities have been found in Samba, the worst of which could result in a Denial of Service condition. Versions less than 4.12.9 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2020-14318, CVE-2020-14323, CVE-2020-14383, CVE-2020-1472
MD5 | 5bb991544b7b094ea08997f5d5fa0908
Ubuntu Security Notice USN-4611-1
Posted Nov 2, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4611-1 - Steven French discovered that Samba incorrectly handled ChangeNotify permissions. A remote attacker could possibly use this issue to obtain file name information. Bas Alberts discovered that Samba incorrectly handled certain winbind requests. A remote attacker could possibly use this issue to cause winbind to crash, resulting in a denial of service. Francis Brosnan Blázquez discovered that Samba incorrectly handled certain invalid DNS records. A remote attacker could possibly use this issue to cause the DNS server to crash, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2020-14318, CVE-2020-14323, CVE-2020-14383
MD5 | 47e6b47eeae24d5bb1467b3b35282526
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