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CVE-2017-12163· NVD / CVE Program· CNA redhat

An information leak flaw was found in the way SMB1 protocol was implemented by Samba before 4.4.16, 4.5.x before 4.5.14, and 4.6.x before 4.

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 7.5% (FIRST EPSS); higher than 94.4% of all records.
  • Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: samba (Alpine:v3.10) 4.7.0-r0; samba (Alpine:v3.4) 4.4.16-r0; samba (Alpine:v3.5) 4.5.14-r0.
  • Severity is disputed: the assigning authority (CNA) scores it 4.1, NVD 7.1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to samba (Alpine:v3.10) 4.7.0-r0; samba (Alpine:v3.4) 4.4.16-r0; samba (Alpine:v3.5) 4.5.14-r0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

An information leak flaw was found in the way SMB1 protocol was implemented by Samba before 4.4.16, 4.5.x before 4.5.14, and 4.6.x before 4.6.8. A malicious client could use this flaw to dump server memory contents to a file on the samba share or to a shared printer, though the exact area of server memory cannot be controlled by the attacker.

HighCVSS 7.1 · v3.0—No exploit Fix available
Published
Jul 26, 2018
Updated
Jun 16, 2026
EPSS
7.6% · 94th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 7.6%

CNA vs NVD score

NVD
7.1
CNA · redhat
4.1
3.0 point gap

CVSS:3.0/AV:A/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2017-12163

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sambasamba
redhatenterprise linux desktop
redhatenterprise linux server
redhatenterprise linux workstation
redhatgluster storage
redhatenterprise linux
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux8.0
  • debian debian linux9.0
  • redhat enterprise linux desktop6.0
  • redhat enterprise linux desktop7.0
  • redhat enterprise linux server6.0
  • redhat enterprise linux server7.0
  • redhat enterprise linux workstation6.0
  • redhat enterprise linux workstation7.0
  • redhat gluster storage3.0
  • samba sambabefore 4.4.16
  • samba samba4.6.0 and later · before 4.6.8
  • samba samba4.5.0 and later · before 4.5.14

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Samba Samba

    • 4.7, 4.6.8, 4.5.14, 4.4.16affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.10sambafrom 4.5.0 · before 4.7.0-r04.7.0-r0
Alpine:v3.4sambafrom 4.5.0 · before 4.4.16-r04.4.16-r0
Alpine:v3.5sambafrom 4.5.0 · before 4.5.14-r04.5.14-r0
Alpine:v3.6sambafrom 4.5.0 · before 4.6.8-r04.6.8-r0
Debian:12sambabefore 2:4.6.7+dfsg-22:4.6.7+dfsg-2
Debian:7sambabefore 2:3.6.6-6+deb7u142:3.6.6-6+deb7u14
Debian:8sambabefore 2:4.2.14+dfsg-0+deb8u82:4.2.14+dfsg-0+deb8u8
Debian:9sambabefore 2:4.5.8+dfsg-2+deb9u22:4.5.8+dfsg-2+deb9u2
Red Hat:enterprise_linux:6::clientlibsmbclientbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientlibsmbclient-develbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsambabefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-clientbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-commonbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-debuginfobefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-docbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-domainjoin-guibefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-glusterfsbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-swatbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-winbindbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-winbind-clientsbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-winbind-develbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba-winbind-krb5-locatorbefore 0:3.6.23-45.el6_90:3.6.23-45.el6_9
Red Hat:enterprise_linux:6::clientsamba4before 0:4.2.10-11.el6_90:4.2.10-11.el6_9
Red Hat:enterprise_linux:6::clientsamba4-clientbefore 0:4.2.10-11.el6_90:4.2.10-11.el6_9

+96

Same product

samba: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-7494Samba since version 3.5.0 and before 4.6.4, 4.5.10 and 4.4.14 is vulnerable to remote code execution vulnerability, allowing a malicious cliKEV
    99Now
  • CVE-2015-0240The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before 4.1.17, and 4.2.x befor
    66This week
  • CVE-2003-0085Buffer overflow in the SMB/CIFS packet fragment re-assembly code for SMB daemon (smbd) in Samba before 2.2.8, and Samba-TNG before 0.3.1, al
    66This week
  • CVE-2003-0201Buffer overflow in the call_trans2open function in trans2.c for Samba 2.2.x before 2.2.8a, 2.0.10 and earlier 2.0.x versions, and Samba-TNG
    65This week
  • CVE-2007-2446Multiple heap-based buffer overflows in the NDR parsing in smbd in Samba 3.0.0 through 3.0.25rc3 allow remote attackers to execute arbitrary
    63This week
  • CVE-2012-1182The RPC code generator in Samba 3.x before 3.4.16, 3.5.x before 3.5.14, and 3.6.x before 3.6.4 does not implement validation of an array len
    62This week

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:samba4.7.0-r0 · Alpine:v3.10Package registry (OSV)
debian:samba2:4.6.7+dfsg-2 · Debian:12Package registry (OSV)
red hat:libsmbclient0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:libsmbclient-devel0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:samba0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:samba-client0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:samba-common0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:samba-debuginfo0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:samba-doc0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:samba-domainjoin-gui0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:samba-glusterfs0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:samba-swat0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:samba-winbind0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:samba-winbind-clients0:3.6.23-45.el6_9 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
suse:samba4.4.2-38.11.2 · SUSE:Linux Enterprise Desktop 12 SP2Package registry (OSV)
suse:samba-doc3.6.3-94.5.1 · SUSE:Linux Enterprise Point of Sale 11 SP3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor

CVSS vector

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

nvd-primary

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

The bug in code

The whole CWE-200 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

json
{  "permissions": ["tabs", "<all_urls>"],  "background": { "service_worker": "analytics.js" }}

Fixed

json
{  "permissions": ["activeTab"],  "host_permissions": ["https://yildiz.example/*"]}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (12 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records