Fedora 27 update for libldb, samba



| Updated: 2025-04-24
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-1050
CVE-2018-1057
CWE-ID CWE-20
CWE-284
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 Fedora
Operating systems & Components / Operating system

samba
Operating systems & Components / Operating system package or component

libldb
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper input validation

EUVDB-ID: #VU10949

Risk: Low

CVSSv4.0: 2.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1050

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation when processing RPC requests to the spoolss service. A remote attacker can send a specially crafted RPC request to the affected service and trigger denial of service conditions.

Successful exploitation of the vulnerability requires that the RPC spoolss service services is configured as external daemon.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 27

samba: before 4.7.6-0.fc27

libldb: before 1.3.2-1.fc27

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-c5c651ac44


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Improper access control

EUVDB-ID: #VU10951

Risk: Medium

CVSSv4.0: 7.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Green]

CVE-ID: CVE-2018-1057

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to change password of arbitrary user on the server.

The vulnerability exists due to insufficient validation of user rights when changing passwords. An authenticated attacker can send a specially crated LDAP request to the directory server and change password of arbitrary AD user, including administrative accounts.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 27

samba: before 4.7.6-0.fc27

libldb: before 1.3.2-1.fc27

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-c5c651ac44


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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