Samba 4.10.0/4.10.1/4.10.2/4.10.3/4.10.4 AD DC LDAP Server null pointer dereference
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.8 | $0-$5k | 0.00 |
A vulnerability was found in Samba 4.10.0/4.10.1/4.10.2/4.10.3/4.10.4 (File Transfer Software). It has been declared as problematic. This vulnerability affects an unknown function of the component AD DC LDAP Server. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:
Samba 4.10.x before 4.10.5 has a NULL pointer dereference, leading to an AD DC LDAP server Denial of Service. This is related to an attacker using the paged search control. The attacker must have directory read access in order to attempt an exploit.
The weakness was shared 06/19/2019 (Website). The advisory is available at usn.ubuntu.com. This vulnerability was named CVE-2019-12436 since 05/28/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not 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 4.10.5 eliminates this vulnerability.
The entry 136653 is related to this item.
Product
Type
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.9VulDB Meta Temp Score: 5.8
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.5
NVD Vector: 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Null pointer dereferenceCWE: CWE-476 / CWE-404
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Samba 4.10.5
Timeline
05/28/2019 🔍06/19/2019 🔍
06/19/2019 🔍
06/19/2019 🔍
10/06/2023 🔍
Sources
Product: samba.orgAdvisory: SA_19_27
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2019-12436 (🔍)
SecurityFocus: 108825 - Samba CVE-2019-12435 Remote Denial of Service Vulnerability
See also: 🔍
Entry
Created: 06/19/2019 17:33Updated: 10/06/2023 13:14
Changes: 06/19/2019 17:33 (62), 06/25/2020 16:26 (2), 10/06/2023 13:08 (4), 10/06/2023 13:14 (1)
Complete: 🔍
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