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TI-2017-05139 Aliases CVE-2017-7494GHSA-453q-q3mp-9cq4

Code injection in samba

Priority CRITICAL 100Exploited in the wildCWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-94.

Summary

Samba 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 client to upload a shared library to a writable share, and then cause the server to load and execute it.

Why it matters now

Exploitation Active In CISA KEV since 2023-03-30CISA due date 2023-04-20Known ransomware use
EPSS 0.99448 99th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA
Fix Fixed Red Hat: 5 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Sambasambasince 3.5.0—No fix listedCNA
  • samba VendorSamba Affected since 3.5.0 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*3.5.0 to before 4.4.0; 4.4.0 to before 4.4.14; 4.5.0 to before 4.5.10; 4.6.0 to before 4.6.4VulnerableSamba
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* Versions 3.5.0 to before 4.4.0; 4.4.0 to before 4.4.14; 4.5.0 to before 4.5.10; 4.6.0 to before 4.6.4 Vulnerable ·Samba
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

Red Hat 5 advisories

  • RHSA-2017:1390 Released 2017-06-05 · Red Hat rating Important
    samba security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.2) libsmbclient-4.2.10-11.el7_2, libwbclient-4.2.10-11.el7_2, samba-4.2.10-11.el7_2 +9
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2) libsmbclient-devel-4.2.10-11.el7_2, libwbclient-devel-4.2.10-11.el7_2, samba-4.2.10-11.el7_2 +10
    • Red Hat Enterprise Linux HPC Node EUS (v. 6.7) samba-3.6.23-32.el6_7, samba-client-3.6.23-32.el6_7, samba-common-3.6.23-32.el6_7 +2
    • Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) libsmbclient-3.6.23-32.el6_7, libsmbclient-devel-3.6.23-32.el6_7, samba-3.6.23-32.el6_7 +6
    • Red Hat Enterprise Linux Server AUS (v. 6.2) libsmbclient-3.6.23-32.el6_2, samba-3.6.23-32.el6_2, samba-client-3.6.23-32.el6_2 +3
    • Red Hat Enterprise Linux Server AUS (v. 6.4) libsmbclient-3.6.23-32.el6_4, samba-3.6.23-32.el6_4, samba-client-3.6.23-32.el6_4 +3
    • Red Hat Enterprise Linux Server AUS (v. 6.5) libsmbclient-3.6.23-32.el6_5, samba-3.6.23-32.el6_5, samba-client-3.6.23-32.el6_5 +3
    • Red Hat Enterprise Linux Server AUS (v. 6.6) libsmbclient-3.6.23-32.el6_6, samba-3.6.23-32.el6_6, samba-client-3.6.23-32.el6_6 +3
    • Red Hat Enterprise Linux Server EUS (v. 6.7) libsmbclient-3.6.23-32.el6_7, libsmbclient-3.6.23-32.el6_7.ppc, samba-3.6.23-32.el6_7 +6
    • Red Hat Enterprise Linux Server EUS (v. 7.2) libsmbclient-4.2.10-11.el7_2, libsmbclient-4.2.10-11.el7_2.ppc, libwbclient-4.2.10-11.el7_2 +15
    • Red Hat Enterprise Linux Server Optional AUS (v. 6.2) libsmbclient-devel-3.6.23-32.el6_2, samba-3.6.23-32.el6_2, samba-doc-3.6.23-32.el6_2 +4
    • Red Hat Enterprise Linux Server Optional AUS (v. 6.4) libsmbclient-devel-3.6.23-32.el6_4, samba-3.6.23-32.el6_4, samba-doc-3.6.23-32.el6_4 +4
    • Red Hat Enterprise Linux Server Optional AUS (v. 6.5) libsmbclient-devel-3.6.23-32.el6_5, samba-3.6.23-32.el6_5, samba-doc-3.6.23-32.el6_5 +4
    • Red Hat Enterprise Linux Server Optional AUS (v. 6.6) libsmbclient-devel-3.6.23-32.el6_6, samba-doc-3.6.23-32.el6_6, samba-domainjoin-gui-3.6.23-32.el6_6 +3
    • Red Hat Enterprise Linux Server Optional EUS (v. 6.7) libsmbclient-devel-3.6.23-32.el6_7, libsmbclient-devel-3.6.23-32.el6_7.ppc, samba-doc-3.6.23-32.el6_7 +6
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.2) libsmbclient-devel-4.2.10-11.el7_2, libsmbclient-devel-4.2.10-11.el7_2.ppc, libwbclient-devel-4.2.10-11.el7_2 +13
    • Red Hat Enterprise Linux Server Optional TUS (v. 6.5) libsmbclient-devel-3.6.23-32.el6_5, samba-3.6.23-32.el6_5, samba-doc-3.6.23-32.el6_5 +4
    • Red Hat Enterprise Linux Server Optional TUS (v. 6.6) libsmbclient-devel-3.6.23-32.el6_6, samba-doc-3.6.23-32.el6_6, samba-domainjoin-gui-3.6.23-32.el6_6 +3
    • Red Hat Enterprise Linux Server Resilient Storage EUS (v. 7.2) ctdb-4.2.10-11.el7_2, ctdb-devel-4.2.10-11.el7_2, ctdb-tests-4.2.10-11.el7_2
    • Red Hat Enterprise Linux Server TUS (v. 6.5) libsmbclient-3.6.23-32.el6_5, samba-3.6.23-32.el6_5, samba-client-3.6.23-32.el6_5 +3
    • Red Hat Enterprise Linux Server TUS (v. 6.6) libsmbclient-3.6.23-32.el6_6, samba-3.6.23-32.el6_6, samba-client-3.6.23-32.el6_6 +3
  • RHSA-2017:1270 Released 2017-05-24 · Red Hat rating Important
    samba security update
    • Red Hat Enterprise Linux Client (v. 7) libsmbclient-4.4.4-14.el7_3, libwbclient-4.4.4-14.el7_3, samba-4.4.4-14.el7_3 +10
    • Red Hat Enterprise Linux Client Optional (v. 7) libsmbclient-devel-4.4.4-14.el7_3, libwbclient-devel-4.4.4-14.el7_3, samba-4.4.4-14.el7_3 +9
    • Red Hat Enterprise Linux ComputeNode (v. 7) libsmbclient-4.4.4-14.el7_3, libwbclient-4.4.4-14.el7_3, samba-4.4.4-14.el7_3 +9
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) libsmbclient-devel-4.4.4-14.el7_3, libwbclient-devel-4.4.4-14.el7_3, samba-4.4.4-14.el7_3 +10
    • Red Hat Enterprise Linux Desktop (v. 6) libsmbclient-3.6.23-43.el6_9, samba-3.6.23-43.el6_9, samba-client-3.6.23-43.el6_9 +3
    • Red Hat Enterprise Linux Desktop Optional (v. 6) libsmbclient-devel-3.6.23-43.el6_9, samba-3.6.23-43.el6_9, samba-doc-3.6.23-43.el6_9 +5
    • Red Hat Enterprise Linux HPC Node (v. 6) samba-3.6.23-43.el6_9, samba-client-3.6.23-43.el6_9, samba-common-3.6.23-43.el6_9 +2
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) libsmbclient-3.6.23-43.el6_9, libsmbclient-devel-3.6.23-43.el6_9, samba-3.6.23-43.el6_9 +6
    • Red Hat Enterprise Linux Server (v. 6) libsmbclient-3.6.23-43.el6_9, libsmbclient-3.6.23-43.el6_9.ppc, samba-3.6.23-43.el6_9 +6
    • Red Hat Enterprise Linux Server (v. 7) libsmbclient-4.4.4-14.el7_3, libsmbclient-4.4.4-14.el7_3.ppc, libwbclient-4.4.4-14.el7_3 +16
    • Red Hat Enterprise Linux Server Optional (v. 6) libsmbclient-devel-3.6.23-43.el6_9, libsmbclient-devel-3.6.23-43.el6_9.ppc, samba-doc-3.6.23-43.el6_9 +6
    • Red Hat Enterprise Linux Server Optional (v. 7) libsmbclient-devel-4.4.4-14.el7_3, libsmbclient-devel-4.4.4-14.el7_3.ppc, libwbclient-devel-4.4.4-14.el7_3 +12
    • Red Hat Enterprise Linux Server Resilient Storage (v. 7) ctdb-4.4.4-14.el7_3, ctdb-tests-4.4.4-14.el7_3
    • Red Hat Enterprise Linux Workstation (v. 6) libsmbclient-3.6.23-43.el6_9, samba-3.6.23-43.el6_9, samba-client-3.6.23-43.el6_9 +3
    • Red Hat Enterprise Linux Workstation (v. 7) libsmbclient-4.4.4-14.el7_3, libwbclient-4.4.4-14.el7_3, samba-4.4.4-14.el7_3 +11
    • Red Hat Enterprise Linux Workstation Optional (v. 6) libsmbclient-devel-3.6.23-43.el6_9, samba-doc-3.6.23-43.el6_9, samba-domainjoin-gui-3.6.23-43.el6_9 +4
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libsmbclient-devel-4.4.4-14.el7_3, libwbclient-devel-4.4.4-14.el7_3, samba-dc-4.4.4-14.el7_3 +7
  • RHSA-2017:1271 Released 2017-05-24 · Red Hat rating Important
    samba4 security update
    • Red Hat Enterprise Linux Desktop (v. 6) samba4-4.2.10-10.el6_9, samba4-client-4.2.10-10.el6_9, samba4-common-4.2.10-10.el6_9 +10
    • Red Hat Enterprise Linux HPC Node (v. 6) samba4-4.2.10-10.el6_9, samba4-client-4.2.10-10.el6_9, samba4-common-4.2.10-10.el6_9 +10
    • Red Hat Enterprise Linux Server (v. 6) samba4-4.2.10-10.el6_9, samba4-client-4.2.10-10.el6_9, samba4-common-4.2.10-10.el6_9 +10
    • Red Hat Enterprise Linux Workstation (v. 6) samba4-4.2.10-10.el6_9, samba4-client-4.2.10-10.el6_9, samba4-common-4.2.10-10.el6_9 +10
Show 2 more Red Hat advisories
  • RHSA-2017:1272 Released 2017-05-24 · Red Hat rating Important
    samba3x security update
    • Red Hat Enterprise Linux Server (v. 5 ELS) samba3x-3.6.23-14.el5_11, samba3x-3.6.23-14.el5_11.i386, samba3x-client-3.6.23-14.el5_11 +13
  • RHSA-2017:1273 Released 2017-05-24 · Red Hat rating Important
    samba security update
    • Red Hat Gluster 3.2 Samba on RHEL-6 ctdb-4.4.6-5.el6rhs, ctdb-tests-4.4.6-5.el6rhs, libsmbclient-4.4.6-5.el6rhs +23
    • Red Hat Gluster 3.2 Samba on RHEL-7 ctdb-4.4.6-5.el7rhgs, ctdb-tests-4.4.6-5.el7rhgs, libsmbclient-4.4.6-5.el7rhgs +23

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:1270
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:1270
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2017:1270
Red Hat Enterprise Linux ComputeNode EUS (v. 7.2)Fixed RHSA-2017:1390
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:1270
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2017:1270, RHSA-2017:1271
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2017:1270
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2017:1270, RHSA-2017:1271
Red Hat Enterprise Linux HPC Node EUS (v. 6.7)Fixed RHSA-2017:1390
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2017:1270
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server (v. 5 ELS)Fixed RHSA-2017:1272
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2017:1270, RHSA-2017:1271
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:1270
Red Hat Enterprise Linux Server AUS (v. 6.2)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server AUS (v. 6.4)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server AUS (v. 6.5)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server AUS (v. 6.6)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server EUS (v. 6.7)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server EUS (v. 7.2)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2017:1270
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:1270
Red Hat Enterprise Linux Server Optional AUS (v. 6.2)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server Optional AUS (v. 6.4)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server Optional AUS (v. 6.5)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server Optional AUS (v. 6.6)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server Optional EUS (v. 6.7)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server Optional EUS (v. 7.2)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server Optional TUS (v. 6.5)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server Optional TUS (v. 6.6)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server Resilient Storage (v. 7)Fixed RHSA-2017:1270
Red Hat Enterprise Linux Server Resilient Storage EUS (v. 7.2)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server TUS (v. 6.5)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Server TUS (v. 6.6)Fixed RHSA-2017:1390
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2017:1270, RHSA-2017:1271
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:1270
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2017:1270
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:1270
Red Hat Gluster 3.2 Samba on RHEL-6Fixed RHSA-2017:1273
Red Hat Gluster 3.2 Samba on RHEL-7Fixed RHSA-2017:1273
Not affected: 1 product
  • Red Hat Enterprise Linux 5

Timeline

  1. 2023-03-30 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2017-7494
  3. 2026-10-03 Alias added: GHSA-453q-q3mp-9cq4

References

Exploit 2

Patch 1

Advisory 11

  • TI-2020-01431 Netlogon Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2015-00210 The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x… CVSS 2.0HIGH 10.0
  • TI-2003-00081 Buffer overflow in the SMB/CIFS packet fragment re-assembly code for SMB daemon (smbd) in… CVSS 2.0HIGH 10.0
  • TI-2003-00185 Buffer overflow in the call_trans2open function in trans2.c for Samba 2.2.x before… CVSS 2.0HIGH 10.0
  • TI-2007-02362 Multiple heap-based buffer overflows in the NDR parsing in smbd in Samba 3.0.0 through… CVSS 2.0HIGH 10.0
  • TI-2004-02557 distcc 2.x, as used in XCode 1.5 and others, when not configured to restrict access to… CVSS 2.0HIGH 9.3
See all 215 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences