Samba: out-of-bounds read in winbind auth_crap
CVE-2022-2127

5.9MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.6 Extended Update Support
Red Hat Enterprise Linux 8.8 Extended Update Support
Red Hat Enterprise Linux 9
Vendor
CVE Published:
20 July 2023

What is CVE-2022-2127?

An out-of-bounds read vulnerability was found in Samba due to insufficient length checks in winbindd_pam_auth_crap.c. When performing NTLM authentication, the client replies to cryptographic challenges back to the server. These replies have variable lengths, and Winbind fails to check the lan manager response length. When Winbind is used for NTLM authentication, a maliciously crafted request can trigger an out-of-bounds read in Winbind, possibly resulting in a crash.

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Affected Version(s)

Red Hat Enterprise Linux 8 0:4.18.6-1.el8

Red Hat Enterprise Linux 8 0:4.18.6-1.el8

Red Hat Enterprise Linux 8.6 Extended Update Support 0:4.15.5-15.el8_6

References

https://access.redhat.com/errata/RHSA-2023:6667
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7139
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:0423
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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