Vulnerability CVE-2019-3870


Published: 2019-04-09

Description:
A vulnerability was found in Samba from version (including) 4.9 to versions before 4.9.6 and 4.10.2. During the creation of a new Samba AD DC, files are created in a private subdirectory of the install location. This directory is typically mode 0700, that is owner (root) only access. However in some upgraded installations it will have other permissions, such as 0755, because this was the default before Samba 4.8. Within this directory, files are created with mode 0666, which is world-writable, including a sample krb5.conf, and the list of DNS names and servicePrincipalName values to update.

Type:

CWE-275

(Permission Issues)

Vendor: Samba
Product: Samba 
Version:
4.9.4
4.9.3
4.9.2
4.9.1
4.9.0
4.10.0
Vendor: Fedoraproject
Product: Fedora 
Version: 30; 29;

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
3.6/10
4.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
Partial

 References:
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3870
https://bugzilla.samba.org/show_bug.cgi?id=13834
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6354GALK73CZWQKFUG7AWB6EIEGFMF62/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JTJVFA3RZ6G2IZDTVKLHRMX6QBYA4GPA/
https://support.f5.com/csp/article/K20804356
https://www.samba.org/samba/security/CVE-2019-3870.html
https://www.synology.com/security/advisory/Synology_SA_19_15

Related CVE
CVE-2019-10171
It was found that the fix for CVE-2018-14648 in 389-ds-base, versions 1.4.0.x before 1.4.0.17, was incorrectly applied in RHEL 7.5. An attacker would still be able to provoke excessive CPU consumption leading to a denial of service.
CVE-2019-9849
LibreOffice has a 'stealth mode' in which only documents from locations deemed 'trusted' are allowed to retrieve remote resources. This mode is not the default mode, but can be enabled by users who want to disable LibreOffice's ability to include rem...
CVE-2019-9848
LibreOffice has a feature where documents can specify that pre-installed scripts can be executed on various document events such as mouse-over, etc. LibreOffice is typically also bundled with LibreLogo, a programmable turtle vector graphics script, w...
CVE-2019-13272
In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with...
CVE-2019-10191
A vulnerability was discovered in DNS resolver of knot resolver before version 4.1.0 which allows remote attackers to downgrade DNSSEC-secure domains to DNSSEC-insecure state, opening possibility of domain hijack using attacks against insecure DNS pr...
CVE-2019-1010305
libmspack 0.9.1alpha is affected by: Buffer Overflow. The impact is: Information Disclosure. The component is: function chmd_read_headers() in libmspack(file libmspack/mspack/chmd.c). The attack vector is: the victim must open a specially crafted chm...
CVE-2019-7165
A buffer overflow in DOSBox 0.74-2 allows attackers to execute arbitrary code.
CVE-2019-5839
Excessive data validation in URL parser in Google Chrome prior to 75.0.3770.80 allowed a remote attacker who convinced a user to input a URL to bypass website URL validation via a crafted URL.

Copyright 2019, cxsecurity.com

 

Back to Top