Use After Free in Samba
CVE-2019-19344
There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all samba 4.10.x versions before 4.10.12 and all samba 4.11.x versions before 4.11.5, essentially due to a call to realloc() while other local variables still point at the original buffer.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.028 (86.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Samba
- Synology Directory Server
- Synology Diskstation Manager — versions 6.2
- Synology Router Manager — versions 1.2
- Synology Skynas
- Canonical Ubuntu Linux — versions 16.04, 18.04, 19.04
- openSUSE Leap — versions 15.1
- Red Hat Samba — versions all samba 4.11.x versions before 4.11.5, all samba 4.10.x versions before 4.10.12, all samba 4.9.x versions before 4.9.18
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.samba.org/samba/security/CVE-2019-19344.html (Vendor Advisory)
- security.netapp.com/advisory/ntap-20200122-0001/ (Third Party Advisory)
- www.synology.com/security/advisory/Synology_SA_20_01 (Third Party Advisory)
- usn.ubuntu.com/4244-1/ (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00055.html (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202003-52 (vendor-advisory)
- lists.debian.org/debian-lts-announce/2023/09/msg00013.html (mailing-list)
Frequently asked questions
- What is CVE-2019-19344?
- CVE-2019-19344 is a medium-severity vulnerability in Samba, classified under Use After Free. CVSS score: 6.5/10. Published 2020-01-21.
- How severe is CVE-2019-19344?
- Medium severity. CVSS v3 base score is 6.5 out of 10.