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CVE-2019-14861

MEDIUM
5.3
CVSS Score
Published: December 10, 2019 at 10:19 PM UTC
Updated: June 17, 2026 at 02:19 AM UTC
5 products affected across 5 vendorsDebian LinuxFedoraUbuntu Linux

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Severity
MEDIUM5.3
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the (poorly named) dnsserver RPC pipe provides administrative facilities to modify DNS records and zones. Samba, when acting as an AD DC, stores DNS records in LDAP. In AD, the default permissions on the DNS partition allow creation of new records by authenticated users. This is used for example to allow machines to self-register in DNS. If a DNS record was created that case-insensitively matched the name of the zone, the ldb_qsort() and dns_name_compare() routines could be confused into reading memory prior to the list of DNS entries when responding to DnssrvEnumRecords() or DnssrvEnumRecords2() and so following invalid memory as a pointer.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux· Canonicalrubygems
95%
14.0416.0418.0419.0419.10
Debian Linux· Debiandrupal
95%
9.0
Fedora· Fedora Projectrpm
95%
3031
Leap· openSUSEdrupal
95%
15.1
SAMBA· Samba
95%
v < 4.10.11v < 4.11.3v < 4.9.174.0.0 ≤ v < 4.9.174.10.0 ≤ v < 4.10.114.11.0 ≤ v < 4.11.3
Affected range stops below 4.10.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.11.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.17, so it looks safe — our inference, not a vendor statement

References (12)

Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00038.html
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2024/06/24/3
Issue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14861
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PJH3ROOFYMOATD2UEPC47P5RPBDTY77E/
Vendor Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNKA4YIPV7AZR7KK3GW6L3HKGHSGJZFE/
Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202003-52
Third Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20191210-0002/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-276

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