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EUVD-2023-44015 · Published Jul 20, 2023
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.
Technologies
Samba SambaRedhat Enterprise LinuxFedoraproject FedoraRedhat Storage
Weaknesses
CWE-924CWE-347
CVSS scores
- v3.15.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
MITRE ATT&CK
InferredWhere this vulnerability fits in an attack
Initial Access
References
- https://access.redhat.com/errata/RHSA-2023:4325
- https://access.redhat.com/errata/RHSA-2023:4328
- https://access.redhat.com/security/cve/CVE-2023-3347
- https://bugzilla.redhat.com/show_bug.cgi?id=2222792
- https://www.samba.org/samba/security/CVE-2023-3347.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BPCSGND7LO467AJGR5DYBGZLTCGTOBCC/
Potentially impacted assets
See if this affects your attack surface
