A flaw was found in the way samba implemented an RPC endpoint emulating the Windows registry service API. An unprivileged attacker could use this flaw to create a new registry hive file anywhere they have unix permissions which could lead to creation of a new file in the Samba share. Versions before 4.8.11, 4.9.6 and 4.10.2 are vulnerable.

References

• https://nvd.nist.gov/vuln/detail/CVE-2019-3880
• https://access.redhat.com/errata/RHSA-2019:1966
• https://access.redhat.com/errata/RHSA-2019:1967
• https://access.redhat.com/errata/RHSA-2019:2099
• https://access.redhat.com/errata/RHSA-2019:3582
• https://access.redhat.com/security/cve/cve-2019-3880
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3880
• https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6354GALK73CZWQKFUG7AWB6EIEGFMF62/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HSRLRO7BPRFETVFZ4TVJL2VFZEPHKJY4/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JTJVFA3RZ6G2IZDTVKLHRMX6QBYA4GPA/
• https://security.netapp.com/advisory/ntap-20190411-0004/
• https://support.f5.com/csp/article/K20804356
• https://www.samba.org/samba/security/CVE-2019-3880.html
• https://www.synology.com/security/advisory/Synology_SA_19_15
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00050.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00106.html