CVEs / CVE-2017-7494
CVE-2017-7494: Samba Remote Code Execution Vulnerability
- Known exploited in the CISA KEV catalog since 30 Mar 2023
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 99.4% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Samba contains a 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.
Description
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Samba samba | since 3.5.0 | — |
Exploitation
| In CISA KEV since | 30 Mar 2023 |
|---|---|
| Due date for US federal agencies | 20 Apr 2023 |
| Used in ransomware campaigns | Known |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-94 |
References
- CVE-2017-7494 on NVD
- CVE-2017-7494 in the CISA KEV catalog
- https://www.samba.org/samba/security/CVE-2017-7494.html (cited by CISA)
- CVE-2017-7494 on OSV
- http://www.debian.org/security/2017/dsa-3860 Third Party Advisory
- http://www.securityfocus.com/bid/98636 Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038552 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1270 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1271 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1272 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1273 Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1390 Third Party Advisory
- https://download.schneider-electric.com/files?p_enDocType=Technical+leaflet&p_File_Name=SEVD-2018-095-01+Security+Notification+Umotion+V1.1.pdf&p_Doc_Ref=SEVD-2018-095-01 Third Party Advisory
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbns03755en_us Third Party Advisory
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03759en_us Third Party Advisory
- https://security.gentoo.org/glsa/201805-07 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20170524-0001/ Third Party Advisory
- https://www.exploit-db.com/exploits/42060/ Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/42084/ Third Party Advisory, VDB Entry
- https://www.samba.org/samba/security/CVE-2017-7494.html Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-7494 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.