Samba before 4.7.3 might allow remote attackers to obtain sensitive information by…
Priority MEDIUM 52CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 17 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
Samba before 4.7.3 might allow remote attackers to obtain sensitive information by leveraging failure of the server to clear allocated heap memory.
Why it matters now
EPSS 0.21408 97th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 17 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 3.6.0 to before 4.5.15; 4.6.0 to before 4.6.11; 4.7.0 to before 4.7.3 | Vulnerable | Samba |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:17.04:*:*:*:*:*:*:* | 17.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* | 17.10 | Vulnerable | Canonical |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
- cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* Versions 3.6.0 to before 4.5.15; 4.6.0 to before 4.6.11; 4.7.0 to before 4.7.3 Vulnerable ·Samba
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:17.04:*:*:*:*:*:*:* Versions 17.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Vulnerable ·Canonical
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
Remediation
Red Hat 3 advisories
- RHSA-2017:3278 Released 2017-11-29 · Red Hat rating Importantsamba4 security update
- Red Hat Enterprise Linux Desktop (v. 6) samba4-4.2.10-12.el6_9, samba4-client-4.2.10-12.el6_9, samba4-common-4.2.10-12.el6_9 +10
- Red Hat Enterprise Linux HPC Node (v. 6) samba4-4.2.10-12.el6_9, samba4-client-4.2.10-12.el6_9, samba4-common-4.2.10-12.el6_9 +10
- Red Hat Enterprise Linux Server (v. 6) samba4-4.2.10-12.el6_9, samba4-client-4.2.10-12.el6_9, samba4-common-4.2.10-12.el6_9 +10
- Red Hat Enterprise Linux Workstation (v. 6) samba4-4.2.10-12.el6_9, samba4-client-4.2.10-12.el6_9, samba4-common-4.2.10-12.el6_9 +10
- RHSA-2017:3260 Released 2017-11-27 · Red Hat rating Importantsamba security update
- Red Hat Enterprise Linux Client (v. 7) libsmbclient-4.6.2-12.el7_4, libwbclient-4.6.2-12.el7_4, samba-4.6.2-12.el7_4 +10
- Red Hat Enterprise Linux Client Optional (v. 7) libsmbclient-devel-4.6.2-12.el7_4, libwbclient-devel-4.6.2-12.el7_4, samba-4.6.2-12.el7_4 +9
- Red Hat Enterprise Linux ComputeNode (v. 7) libsmbclient-4.6.2-12.el7_4, libwbclient-4.6.2-12.el7_4, samba-4.6.2-12.el7_4 +9
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) libsmbclient-devel-4.6.2-12.el7_4, libwbclient-devel-4.6.2-12.el7_4, samba-4.6.2-12.el7_4 +10
- Red Hat Enterprise Linux Server (v. 7) libsmbclient-4.6.2-12.el7_4, libsmbclient-4.6.2-12.el7_4.ppc, libwbclient-4.6.2-12.el7_4 +16
- Red Hat Enterprise Linux Server Optional (v. 7) libsmbclient-devel-4.6.2-12.el7_4, libsmbclient-devel-4.6.2-12.el7_4.ppc, libwbclient-devel-4.6.2-12.el7_4 +12
- Red Hat Enterprise Linux Server Resilient Storage (v. 7) ctdb-4.6.2-12.el7_4, ctdb-tests-4.6.2-12.el7_4
- Red Hat Enterprise Linux Workstation (v. 7) libsmbclient-4.6.2-12.el7_4, libwbclient-4.6.2-12.el7_4, samba-4.6.2-12.el7_4 +11
- Red Hat Enterprise Linux Workstation Optional (v. 7) libsmbclient-devel-4.6.2-12.el7_4, libwbclient-devel-4.6.2-12.el7_4, samba-dc-4.6.2-12.el7_4 +7
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) libsmbclient-4.6.2-12.el7_4, libwbclient-4.6.2-12.el7_4, samba-4.6.2-12.el7_4 +11
- Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) libsmbclient-devel-4.6.2-12.el7_4, libwbclient-devel-4.6.2-12.el7_4, samba-dc-4.6.2-12.el7_4 +7
- RHSA-2017:3261 Released 2017-11-27 · Red Hat rating Importantsamba security update
- Red Hat Gluster 3.3 Samba on RHEL-6 ctdb-4.6.3-9.el6rhs, ctdb-tests-4.6.3-9.el6rhs, libsmbclient-4.6.3-9.el6rhs +23
- Red Hat Gluster 3.3 Samba on RHEL-7 ctdb-4.6.3-9.el7rhgs, ctdb-tests-4.6.3-9.el7rhgs, libsmbclient-4.6.3-9.el7rhgs +23
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2017:3278 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2017:3278 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2017:3278 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Enterprise Linux Server Resilient Storage (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2017:3278 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) | Fixed | RHSA-2017:3260 |
| Red Hat Gluster 3.3 Samba on RHEL-6 | Fixed | RHSA-2017:3261 |
| Red Hat Gluster 3.3 Samba on RHEL-7 | Fixed | RHSA-2017:3261 |
Timeline
- 2026-10-02 Threatist record created from CVE-2017-15275
- 2026-10-03 Alias added: GHSA-3rgf-xqhg-x97j
References
Advisory 11
- RHSA-2017:3278
- USN-3486-2
- DSA-4043
- [debian-lts-announce] 20171121 [SECURITY] [DLA 1183-1] samba security update
- RHSA-2017:3260
- https://www.samba.org/samba/security/CVE-2017-15275.html
- RHSA-2017:3261
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03817en_us
- GLSA-201805-07
- USN-3486-1
- https://www.synology.com/support/security/Synology_SA_17_72_Samba
Sources
- CVE-2017-15275 · CVE Program
- CVE-2017-15275 · NVD
- FIRST EPSS
- GHSA-3rgf-xqhg-x97j · GitHub Advisory Database · CC BY 4.0
- CVE-2017-15275 · Red Hat security data · CC BY 4.0
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