Security Bulletin: Samba for IBM i is vulnerable to attacker obtaining sensitive information due to a memory leak with SMB1 requests (CVE-2022-32742)

Security Bulletin

Summary

Samba for IBM i is vulnerable to an attacker obtaining sensitive information due to a memory leak handling SMB1 requests as described in the vulnerability details section. IBM i has addressed the vulnerability in Samba with a fix as described in the remediation/fixes section.

Vulnerability Details

CVEID: CVE-2022-32742
DESCRIPTION: Samba could allow a remote authenticated attacker to obtain sensitive information, caused by a memory leak when handling SMB1 requests. By sending a specially-crafted request to write data to a file share, an attacker could exploit this vulnerability to obtain memory 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/232306 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

Affected Product(s)	Version(s)
IBM i	7.4
IBM i	7.3

Remediation/Fixes

The issue can be fixed by applying a PTF to IBM i. IBM i releases 7.4 and 7.3 will be fixed.

The IBM i PTF numbers contain the fix for the vulnerability.

IBM i Release	5770-SS1 PTF Number	PTF Download Link
7.4	SI80816	SI80816
7.3	SI80815	SI80815

https://www.ibm.com/support/fixcentral

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

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

16 Aug 2022: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Tips

Security Bulletin: Samba for IBM i is vulnerable to attacker obtaining sensitive information due to a memory leak with SMB1 requests (CVE-2022-32742)