Multiple vulnerabilities in Samba
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2019-14902 CVE-2019-14907 CVE-2019-19344 |
| CWE-ID | CWE-399 CWE-20 CWE-416 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Samba Server applications / Directory software, identity management |
| Vendor | Samba |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Resource management error
EUVDB-ID: #VU24465
Risk: Medium
CVSSv3.1: 4 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-14902
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security checks.
The vulnerability exists due to absent full-sync replication that did not allow ACL changes to be replicated to all domain controllers. A remote attacker can gain access to sensitive resources.
Install updates from vendor's website.
Vulnerable software versionsSamba: 4.0.0 - 4.11.4
External linkshttp://www.samba.org/samba/security/CVE-2019-14902.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Improper input validation
EUVDB-ID: #VU24466
Risk: Medium
CVSSv3.1: 5 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-14907
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect processing of certain user-controlled string, if logging is enabled at level 3 or above. A remote attacker can send specially crafted data to the Samba DC and terminate Samba RPC server. MitigationInstall updates from vendor's website.
Vulnerable software versionsSamba: 4.0.0 - 4.11.4
External linkshttp://www.samba.org/samba/security/CVE-2019-14907.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Use-after-free
EUVDB-ID: #VU24467
Risk: Low
CVSSv3.1: 3.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-19344
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a use-after-free error during DNS zone scavenging. A remote attacker can under rare conditions to query DNS and obtain parts of memory that was written into database during zone scavenging process.
Install updates from vendor's website.
Vulnerable software versionsSamba: 4.9.0 - 4.11.4
External linkshttp://www.samba.org/samba/security/CVE-2019-19344.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
