critical
9.8
CWE
416
Advisory Published
CVE Published
Updated

CVE-2017-14746: Use After Free

First published: Fri Nov 10 2017(Updated: )

As per upstream advisory: All versions of Samba from 4.0.0 onwards are vulnerable to a use after free vulnerability, where a malicious SMB1 request can be used to control the contents of heap memory via a deallocated heap pointer. It is possible this may be used to compromise the SMB server.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
debian/samba
2:4.9.5+dfsg-5+deb10u3
2:4.9.5+dfsg-5+deb10u4
2:4.13.13+dfsg-1~deb11u5
2:4.17.11+dfsg-0+deb12u1
2:4.17.12+dfsg-0+deb12u1
2:4.19.1+dfsg-4
2:4.19.2+dfsg-1
Samba>=4.0.0<4.5.0
Samba>=4.5.0<4.5.15
Samba>=4.6.0<4.6.11
Samba>=4.7.0<4.7.3
Ubuntu=14.04
Ubuntu=16.04
Ubuntu=17.04
Ubuntu=17.10
Debian Linux=8.0
Debian Linux=9.0
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Workstation=6.0
Red Hat Enterprise Linux Workstation=7.0

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2017-14746?

    CVE-2017-14746 is considered a critical vulnerability due to its potential to allow an attacker to control heap memory through malicious SMB1 requests.

  • How do I fix CVE-2017-14746?

    To fix CVE-2017-14746, upgrade to a patched version of Samba that is above 4.5.15 or apply relevant updates provided by your operating system vendor.

  • Which versions of Samba are vulnerable to CVE-2017-14746?

    All versions of Samba from 4.0.0 onwards, up to 4.5.15, are vulnerable to CVE-2017-14746.

  • What types of systems are affected by CVE-2017-14746?

    CVE-2017-14746 affects Samba installations on various platforms including Debian, Ubuntu, and Red Hat Linux.

  • Can CVE-2017-14746 be exploited remotely?

    Yes, CVE-2017-14746 can potentially be exploited remotely through malicious SMB1 requests targeting the Samba server.

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