Samba up to 4.10.4 AD DC DNS Management Server null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Samba up to 4.10.4. Affected by this vulnerability is an unknown functionality of the component AD DC DNS Management Server. Performing a manipulation results in null pointer dereference. This vulnerability was named CVE-2019-12435. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Samba up to 4.10.4 (File Transfer Software). It has been classified as problematic. This affects some unknown processing of the component AD DC DNS Management Server. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to Denial of Service. This is related to the AD DC DNS management server (dnsserver) RPC server process.

The weakness was presented 06/19/2019 (Website). The advisory is shared at usn.ubuntu.com. This vulnerability is uniquely identified as CVE-2019-12435 since 05/28/2019. The exploitability is told to be easy. It is possible to initiate the attack remotely. Required for exploitation is a authentication. Neither technical details nor an exploit are publicly available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 197498 (Ubuntu Security Notification for Samba Vulnerabilities (USN-4018-1)).

Upgrading to version 4.9.9 or 4.10.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 108825†). See VDB-136654 for similar entry. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Samba 4.9.9/4.10.5

Timelineinfo

05/28/2019 🔍
06/19/2019 +22 days 🔍
06/19/2019 +0 days 🔍
06/19/2019 +0 days 🔍
10/06/2023 +1570 days 🔍

Sourcesinfo

Product: samba.org

Advisory: SA_19_27
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-12435 (🔍)
GCVE (CVE): GCVE-0-2019-12435
GCVE (VulDB): GCVE-100-136653
SecurityFocus: 108825 - Samba CVE-2019-12435 Remote Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 06/19/2019 17:33
Updated: 10/06/2023 13:00
Changes: 06/19/2019 17:33 (62), 06/25/2020 16:24 (2), 10/06/2023 12:52 (4), 10/06/2023 13:00 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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