Vulnerability-Lookup

VAR-201904-0324

Vulnerability from variot - Updated: 2025-01-15 22:57

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. Samba Contains a permission vulnerability.Tampering with information and disrupting service operations (DoS) There is a possibility of being put into a state. A local attacker can exploit this issue by gaining access to a world-readable file and extracting sensitive information from it. Information obtained may aid in other attacks. Samba is a set of free software developed by the Samba team that enables the UNIX series of operating systems to connect with the SMB/CIFS network protocol of the Microsoft Windows operating system. The software supports sharing printers, transferring data files and so on. There is a security vulnerability in Samba, which originates from the fact that the program creates files in the private/ directory as globally writable. An attacker could exploit this vulnerability to elevate privileges

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CVE-2019-3870 (GCVE-0-2019-3870)

Vulnerability from cvelistv5 – Published: 2019-04-09 15:17 – Updated: 2024-08-04 19:19

Summary

Severity

6.1 (Medium)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

CWE

CWE-276

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1200 records in the last 180 days details

References

7 references

URL	Tags
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.samba.org/samba/security/CVE-2019-3870.html	x_refsource_MISC
https://bugzilla.samba.org/show_bug.cgi?id=13834	x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://www.synology.com/security/advisory/Synolo…	x_refsource_CONFIRM
https://support.f5.com/csp/article/K20804356	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
The Samba Project	samba	Affected: 4.9.6 Affected: 4.10.2

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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