CVE-2022-2127
MEDIUM severity · CVSS 5.9 · Out-of-bounds read
5.9CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)2%
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (4)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.samba.org/samba/security/CVE-2022-2127.htmlAdvisory
- https://access.redhat.com/errata/RHSA-2023:6667Advisory
- https://access.redhat.com/errata/RHSA-2023:7139Advisory
- https://access.redhat.com/errata/RHSA-2024:0423
- https://access.redhat.com/errata/RHSA-2024:0580
- https://access.redhat.com/security/cve/CVE-2022-2127Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2222791Advisory