CVE-2019-12435
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to...
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to Denial of Service. This is related to the AD DC DNS management server (dnsserver) RPC server process.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to Denial of Service. This is related to the AD DC DNS management server (dnsserver) RPC server process.
- Record
CVE-2019-12435- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:N/A:P - Weakness
- CWE-476
- Updated
- 2026-11-02
CVE List No score
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to Denial of Service. This is related to the AD DC DNS management server (dnsserver) RPC server process.
- Record
CVE-2019-12435- Updated
- 2026-11-02
EUVDEUVD-2019-4045 No score
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to Denial of Service. This is related to the AD DC DNS management server (dnsserver) RPC server process.
- Record
EUVD-2019-4045- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8gjg-6f8w-gvhc No score
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to...
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to Denial of Service. This is related to the AD DC DNS management server (dnsserver) RPC server process.
- Record
GHSA-8gjg-6f8w-gvhc- Updated
- 2026-11-02
OSVALPINE-CVE-2019-12435
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to Denial of Service. This is related to the AD DC DNS management server (dnsserver) RPC server process.
- Record
ALPINE-CVE-2019-12435- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to Denial of Service. This is related to the AD DC DNS management server (dnsserver) RPC server process.
- Record
CVE-2019-12435- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Show 7 moreShow less
OSVDEBIAN-CVE-2019-12435
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to Denial of Service. This is related to the AD DC DNS management server (dnsserver) RPC server process.
- Record
DEBIAN-CVE-2019-12435- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2019-12435
Samba 4.9.x before 4.9.9 and 4.10.x before 4.10.5 has a NULL pointer dereference, leading to Denial of Service. This is related to the AD DC DNS management server (dnsserver) RPC server process.
- Record
UBUNTU-CVE-2019-12435- CVSS 3.0
- 6.5 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVMGASA-2019-0286 No score
Updated samba packages fix security vulnerabilities
Updated samba packages fix security vulnerabilities:
A combination of parameters and permissions in smb.conf can allow user to escape from the share path definition (CVE-2019-10197).
An authenticated user can crash the Samba AD DC's RPC server process via a NULL pointer dereference (CVE-2019-12435)
An user with read access to the directory can cause a NULL pointer dereference using the paged search control (CVE-2019-12436).
For other fixes in this update, see the referenced changelogs.
- Record
MGASA-2019-0286- Updated
- 2026-11-02
OSVopenSUSE-SU-2019:1755-1 No score
Security update for samba
This update for samba fixes the following issues:
Security issues fixed:
- CVE-2019-12435: zone operations can crash rpc server; (bso#13922); (bsc#1137815).
Other issues fixed:
- Fix cephwrap_flistxattr() debug message; (bso#13940); (bsc#1134697).
- Add ceph_snapshots VFS module; (jsc#SES-183).
- Fix vfs_ceph realpath; (bso#13918); (bsc#1134452).
- MacOS credit accounting breaks with async SESSION SETUP; (bsc#1125601); (bso#13796).
- Mac OS X SMB2 implmenetation sees Input/output error or Resource temporarily unavailable and drops connection; (bso#13698)
- Explicitly enable libcephfs POSIX ACL support; (bso#13896); (bsc#1130245).
This update was imported from the SUSE:SLE-15-SP1:Update update project.
- Record
openSUSE-SU-2019:1755-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11365-1 No score
ctdb-4.14.6+git.182.2205d5224e3-1.1 on GA media
These are all security issues fixed in the ctdb-4.14.6+git.182.2205d5224e3-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11365-1- Updated
- 2026-11-02
OSVSUSE-SU-2019:1574-1 No score
Security update for samba
This update for samba fixes the following issues:
Security issues fixed:
- CVE-2019-12435: zone operations can crash rpc server; (bso#13922); (bsc#1137815).
Other issues fixed:
- Fix cephwrap_flistxattr() debug message; (bso#13940); (bsc#1134697).
- Add ceph_snapshots VFS module; (jsc#SES-183).
- Fix vfs_ceph realpath; (bso#13918); (bsc#1134452).
- MacOS credit accounting breaks with async SESSION SETUP; (bsc#1125601); (bso#13796).
- Mac OS X SMB2 implmenetation sees Input/output error or Resource temporarily unavailable and drops connection; (bso#13698)
- Explicitly enable libcephfs POSIX ACL support; (bso#13896); (bsc#1130245).
- Record
SUSE-SU-2019:1574-1- Updated
- 2026-11-02
OSVSUSE-SU-2019:1574-2 No score
Security update for samba
This update for samba fixes the following issues:
Security issues fixed:
- CVE-2019-12435: zone operations can crash rpc server; (bso#13922); (bsc#1137815).
Other issues fixed:
- Fix cephwrap_flistxattr() debug message; (bso#13940); (bsc#1134697).
- Add ceph_snapshots VFS module; (jsc#SES-183).
- Fix vfs_ceph realpath; (bso#13918); (bsc#1134452).
- MacOS credit accounting breaks with async SESSION SETUP; (bsc#1125601); (bso#13796).
- Mac OS X SMB2 implmenetation sees Input/output error or Resource temporarily unavailable and drops connection; (bso#13698)
- Explicitly enable libcephfs POSIX ACL support; (bso#13896); (bsc#1130245).
- Record
SUSE-SU-2019:1574-2- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
sambaAlpine:v3.10 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.11 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.12 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.13 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.14 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.15 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.16 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.17 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.18 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.19 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
Show 16 moreShow less
| Package | Affected | Fixed |
|---|---|---|
sambaAlpine:v3.20 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.21 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.22 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.23 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaAlpine:v3.24 |
4.9.0 up to 4.10.5-r0 | 4.10.5-r0 |
sambaDebian:12 |
before 2:4.9.5+dfsg-5 | 2:4.9.5+dfsg-5 |
sambaDebian:13 |
before 2:4.9.5+dfsg-5 | 2:4.9.5+dfsg-5 |
sambaDebian:14 |
before 2:4.9.5+dfsg-5 | 2:4.9.5+dfsg-5 |
sambaMageia:7 From an advisory covering 3 CVEs |
before 4.10.8-3.mga7 | 4.10.8-3.mga7 |
ldbMageia:7 From an advisory covering 3 CVEs |
before 1.5.5-1.mga7 | 1.5.5-1.mga7 |
sambaSUSE:Linux Enterprise Module for Basesystem 15 SP1 |
before 4.9.5+git.176.375e1f05788-3.6.1 | 4.9.5+git.176.375e1f05788-3.6.1 |
sambaSUSE:Linux Enterprise Module for Python 2 15 SP1 |
before 4.9.5+git.176.375e1f05788-3.6.1 | 4.9.5+git.176.375e1f05788-3.6.1 |
sambaSUSE:Linux Enterprise High Availability Extension 15 SP1 |
before 4.9.5+git.176.375e1f05788-3.6.1 | 4.9.5+git.176.375e1f05788-3.6.1 |
sambaSUSE:Enterprise Storage 6 |
before 4.9.5+git.176.375e1f05788-3.6.1 | 4.9.5+git.176.375e1f05788-3.6.1 |
sambaopenSUSE:Leap 15.1 |
before 4.9.5+git.176.375e1f05788-lp151.2.3.1 | 4.9.5+git.176.375e1f05788-lp151.2.3.1 |
sambaopenSUSE:Tumbleweed From an advisory covering 66 CVEs |
before 4.14.6+git.182.2205d5224e3-1.1 | 4.14.6+git.182.2205d5224e3-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-12435 is a medium vulnerability (CVSS 6.5) in Samba, published June 19, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.14%, the 82nd percentile. Fixed in samba 4.10.5-r0.
References
samba.org/samba/security/CVE-2019-12435.html
usn.ubuntu.com/4018-1
securityfocus.com/bid/108825
synology.com/security/advisory/Synology_SA_19_27
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQ3LCJNJ3ONHIRKDSKOTT6QGXALLCHVG
Show 90 moreShow less
lists.opensuse.org/opensuse-security-announce/2019-07/msg00023.html
nvd.nist.gov/vuln/detail/CVE-2019-12435
github.com/advisories/GHSA-8gjg-6f8w-gvhc
security.alpinelinux.org/vuln/CVE-2019-12435
security-tracker.debian.org/tracker/CVE-2019-12435
advisories.mageia.org/MGASA-2019-0286.html
bugs.mageia.org/show_bug.cgi?id=24980
suse.com/support/update/announcement/2019/suse-su-20191574-1
bugzilla.suse.com/1125601
ubuntu.com/security/CVE-2019-12435
cve.org/CVERecord?id=CVE-2019-12435