Samba: smb2 packet signing is not enforced when "server signing = required" is set
Published Jul 20, 2023
5.9
MEDIUMCVSS 3.1
EPSS 0.44%
Description
A vulnerability was found in Samba's SMB2 packet signing mechanism. The SMB2 packet signing is not enforced if an admin configured "server signing = required" or for SMB2 connections to Domain Controllers where SMB2 packet signing is mandatory. This flaw allows an attacker to perform attacks, such as a man-in-the-middle attack, by intercepting the network traffic and modifying the SMB2 messages between client and server, affecting the integrity of the data.
Affected products
No data.
Configuration 1
Configuration 2
- 3.0
- 8.0
- 9.0
Configuration 3
- 38
No data.
Red Hat Enterprise Linux 8
samba-0:4.17.5-3.el8_8
Fixed · RHSA-2023:4328
Red Hat Enterprise Linux 8
samba-0:4.17.5-3.el8_8
Fixed · RHSA-2023:4328
Red Hat Enterprise Linux 9
samba-0:4.17.5-103.el9_2
Fixed · RHSA-2023:4325
Red Hat Enterprise Linux 9
samba-0:4.17.5-103.el9_2
Fixed · RHSA-2023:4325
Red Hat Enterprise Linux 6
samba
Not affected
Red Hat Enterprise Linux 6
samba4
Not affected
Red Hat Enterprise Linux 7
samba
Not affected
Red Hat Storage 3
samba
Out of support scope
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | samba-0:4.17.5-3.el8_8 | Fixed | RHSA-2023:4328 |
| Red Hat Enterprise Linux 8 | samba-0:4.17.5-3.el8_8 | Fixed | RHSA-2023:4328 |
| Red Hat Enterprise Linux 9 | samba-0:4.17.5-103.el9_2 | Fixed | RHSA-2023:4325 |
| Red Hat Enterprise Linux 9 | samba-0:4.17.5-103.el9_2 | Fixed | RHSA-2023:4325 |
| Red Hat Enterprise Linux 6 | samba | Not affected | n/a |
| Red Hat Enterprise Linux 6 | samba4 | Not affected | n/a |
| Red Hat Enterprise Linux 7 | samba | Not affected | n/a |
| Red Hat Storage 3 | samba | Out of support scope | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This CVE only affects Samba starting with 4.17.0 and higher versions.
References (12)
- https://access.redhat.com/errata/RHSA-2023:4325 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2023:4328 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-3347 vdb-entryx_refsource_REDHATThird Party AdvisoryVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2222792 issue-trackingx_refsource_REDHATIssue TrackingThird Party Advisory
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-44015 Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BPCSGND7LO467AJGR5DYBGZLTCGTOBCC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OT74M42E6C36W7PQVY3OS4ZM7DVYB64Z/
- https://nvd.nist.gov/vuln/detail/CVE-2023-3347
- https://security.netapp.com/advisory/ntap-20230731-0010/
- https://www.cve.org/CVERecord?id=CVE-2023-3347
- https://www.debian.org/security/2023/dsa-5477
- https://www.samba.org/samba/security/CVE-2023-3347.html Vendor Advisory
Change history (0)
No recorded changes yet.