Security Bulletin: Samba for IBM i is affected by CVE-2020-14323 and CVE-2020-14318

Summary

Samba is supported on IBM i. IBM i has addressed the applicable CVEs.

Vulnerability Details

CVEID:CVE-2020-14323
**DESCRIPTION:**Samba is vulnerable to a denial of service, caused by a NULL pointer dereference in the Winbind service. By sending a specially-crafted packet, a local authenticated attacker could exploit this vulnerability to crash the winbind service.
CVSS Base score: 5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/190934 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H)

CVEID:CVE-2020-14318
**DESCRIPTION:**Samba could allow a remote authenticated attacker to obtain sensitive information, caused by a missing permissions check on a directory handle requesting ChangeNotify. By sending a specially-crafted request, an attacker could exploit this vulnerability to obtain file name information, and use this information to launch further attacks against the affected system.
CVSS Base score: 4.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/191029 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

Remediation/Fixes

The issues can be resolved by applying a PTF to IBM i.

Releases 7.4, 7.3, and 7.2 of IBM i are supported and will be fixed.

The IBM i PTF numbers are:

Release 7.4 – SI74697
Release 7.3 – SI74696
Release 7.2 – SI74695

<https://www-945.ibm.com/support/fixcentral/&gt;

_Important note: _IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.

Workarounds and Mitigations

None