A vulnerability in Samba could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service (DoS) condition on a targeted system.
The vulnerability is due to a use-after-free memory error with the affected software. An attacker could exploit this vulnerability by submitting a malicious Server Message Block 1 (SMB1) request to the affected system. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the targeted system, or cause a DoS condition on the targeted system.
Samba has confirmed the vulnerability and released software patches.
To exploit this vulnerability, the attacker may need access to trusted or internal networks to submit malicious SMB1 requests to a targeted system. This access requirement could reduce the likelihood of a successful exploit.
Administrators are advised to apply the appropriate updates.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to monitor affected systems.
Samba has released a security announcement at the following link: CVE-2017-14746
Samba has released software patches at the following link: Samba Updates
Red Hat has released updated software for registered subscribers at the following link: Red Hat Network. Red Hat packages can be updated on Red Hat Enterprise Linux versions 5 and later using the yum tool.
big endian 6 (ppc64) | big endian 7 (ppc64) | little endian 7 (ppc64le) | little endian - Extended Update Support 7.4 (ppc64le) | big endian - Extended Update Support 7.4 (ppc64)
Red Hat Enterprise Linux Server
6 (x86_64, i386) | 7 (x86_64) | 4 Year Extended Update Support 7.4 (x86_64)
Red Hat Enterprise Linux Server EUS
Red Hat Enterprise Linux Resilient Storage
Red Hat Enterprise Linux Resilient Storage EUS
Red Hat Enterprise Linux Server TUS
Red Hat Enterprise Linux Workstation
6 (x86_64, i386) | 7 (x86_64)
Red Hat Gluster Storage
for On-premise 3 for RHEL 7 (x86_64) | for On-premise 3 for RHEL 6 (x86_64)
Red Hat Enterprise Linux for Scientific Computing
6 (x86_64) | 7 (x86_64)
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server (for IBM Power LE)
4 Year Extended Update Support 7.4 (ppc64le)
Red Hat Enterprise Linux Resilient Storage (for IBM z Systems)
7 (s390x, ppc64le) | Extended Update Support 7.4 (ppc64le)
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power 9
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Cisco Multivendor Vulnerability Alerts respond to vulnerabilities identified in third-party vendors' products. These alerts contain information compiled from diverse sources and provide comprehensive technical descriptions, objective analytical assessments, workarounds and practical safeguards, and links to vendor advisories and patches.