Improper access control in samba (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-1057
CWE-ID CWE-284
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 samba (Alpine package)
Operating systems & Components / Operating system package or component

RoboHelp
Universal components / Libraries / Software for developers

Vendor Alpine Linux Development Team
Adobe

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) 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 update from vendor's website.

Vulnerable software versions

samba (Alpine package): 4.1.1-r0 - 4.4.16-r1

RoboHelp: 0.60.6-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=d773d4c9846c9af6fff4cf55c1942ce486760f82
https://git.alpinelinux.org/aports/commit/?id=16426b237661b92cf7fe99957baa2311bf66963e
https://git.alpinelinux.org/aports/commit/?id=879a3f1333aee0db3a97bc72522daf6f446c9684
https://git.alpinelinux.org/aports/commit/?id=ccb66a4b1c5776ef7ba3d2b064f4290512ba3c84
https://git.alpinelinux.org/aports/commit/?id=6245a2ceb9dc360ca5f8beb4419ea14952923a37


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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