VulnerabilityModified
CVE-2023-3347
A vulnerability was found in Samba's SMB2 packet signing mechanism.
MEDIUM 5.9EPSS 0.44%
Does this matter?
Lower severity and a low EPSS score (0.44%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.44% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347, CWE-924
- Affected
- samba/samba · redhat/storage · redhat/enterprise linux · fedoraproject/fedora
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2023:4325Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:4328Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-3347Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2222792Issue Tracking, Third Party Advisory
- https://www.samba.org/samba/security/CVE-2023-3347.htmlVendor Advisory
- https://access.redhat.com/errata/RHSA-2023:4325Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:4328Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-3347Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2222792Issue Tracking, Third Party 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://security.netapp.com/advisory/ntap-20230731-0010/
- https://www.debian.org/security/2023/dsa-5477
- https://www.samba.org/samba/security/CVE-2023-3347.htmlVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.