SB2018031544 - Improper access control in samba (Alpine package)
Published: March 15, 2018
Security Bulletin ID
SB2018031544
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper access control (CVE-ID: CVE-2018-1057)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 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
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.
Remediation
Install update from vendor's website.
References
- 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