Buffer overflow in the SMB1 packet chaining implementation in the chain_reply function in…
Priority HIGH 73CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
Buffer overflow in the SMB1 packet chaining implementation in the chain_reply function in process.c in smbd in Samba 3.0.x before 3.3.13 allows remote attackers to cause a denial of service (memory corruption and daemon crash) or possibly execute arbitrary code via a crafted field in a packet.
Why it matters now
EPSS 0.78558 99th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
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 · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* | 3.0.0 – 3.3.12 | Vulnerable | Samba |
| cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* | 6.06 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:* | 8.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:* | 9.04 | Vulnerable | Canonical |
| cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Debian |
- cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* Versions 3.0.0 – 3.3.12 Vulnerable ·Samba
- cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* Versions 6.06 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:* Versions 8.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:* Versions 9.04 Vulnerable ·Canonical
- cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Debian
Remediation
Red Hat 1 advisory
- RHSA-2010:0488 Released 2010-06-16 · Red Hat rating Criticalsamba and samba3x security update
- Red Hat Desktop version 3 samba-3.0.9-1.3E.17, samba-3.0.9-1.3E.17.i386, samba-client-3.0.9-1.3E.17 +5
- Red Hat Enterprise Linux (v. 5 server) libsmbclient-3.0.33-3.29.el5_5, libsmbclient-3.0.33-3.29.el5_5.i386, libsmbclient-3.0.33-3.29.el5_5.ia64 +47
- Red Hat Enterprise Linux AS EUS (v. 4.7) samba-3.0.28-0.10.el4_7, samba-3.0.28-0.10.el4_7.i386, samba-3.0.28-0.10.el4_7.ia64 +13
- Red Hat Enterprise Linux AS version 3 samba-3.0.9-1.3E.17, samba-3.0.9-1.3E.17.i386, samba-3.0.9-1.3E.17.ia64 +13
- Red Hat Enterprise Linux AS version 4 samba-3.0.33-0.19.el4_8.1, samba-3.0.33-0.19.el4_8.1.i386, samba-3.0.33-0.19.el4_8.1.ia64 +13
- Red Hat Enterprise Linux Desktop (v. 5 client) libsmbclient-3.0.33-3.29.el5_5, libsmbclient-3.0.33-3.29.el5_5.i386, libsmbclient-devel-3.0.33-3.29.el5_5 +35
- Red Hat Enterprise Linux Desktop version 4 samba-3.0.33-0.19.el4_8.1, samba-3.0.33-0.19.el4_8.1.i386, samba-client-3.0.33-0.19.el4_8.1 +5
- Red Hat Enterprise Linux ES EUS (v. 4.7) samba-3.0.28-0.10.el4_7, samba-3.0.28-0.10.el4_7.i386, samba-3.0.28-0.10.el4_7.ia64 +9
- Red Hat Enterprise Linux ES version 3 samba-3.0.9-1.3E.17, samba-3.0.9-1.3E.17.i386, samba-3.0.9-1.3E.17.ia64 +9
- Red Hat Enterprise Linux ES version 4 samba-3.0.33-0.19.el4_8.1, samba-3.0.33-0.19.el4_8.1.i386, samba-3.0.33-0.19.el4_8.1.ia64 +9
- Red Hat Enterprise Linux EUS (v. 5.3 server) samba-3.0.33-3.7.el5_3.2, samba-3.0.33-3.7.el5_3.2.i386, samba-3.0.33-3.7.el5_3.2.ia64 +13
- Red Hat Enterprise Linux EUS (v. 5.4 server) samba-3.0.33-3.15.el5_4.2, samba-3.0.33-3.15.el5_4.2.i386, samba-3.0.33-3.15.el5_4.2.ia64 +13
- Red Hat Enterprise Linux WS version 3 samba-3.0.9-1.3E.17, samba-3.0.9-1.3E.17.i386, samba-3.0.9-1.3E.17.ia64 +9
- Red Hat Enterprise Linux WS version 4 samba-3.0.33-0.19.el4_8.1, samba-3.0.33-0.19.el4_8.1.i386, samba-3.0.33-0.19.el4_8.1.ia64 +9
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Desktop version 3 | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux AS EUS (v. 4.7) | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux AS version 3 | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux ES EUS (v. 4.7) | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux ES version 3 | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux EUS (v. 5.3 server) | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux EUS (v. 5.4 server) | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux WS version 3 | Fixed | RHSA-2010:0488 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2010:0488 |
Timeline
- 2026-10-02 Threatist record created from CVE-2010-2063
- 2026-10-03 Alias added: GHSA-ghx2-3q8p-8mw6
References
Patch 3
Advisory 16
- HPSBUX02657
- HPSBUX02609
- http://www.samba.org/samba/ftp/history/samba-3.3.13.html
- DSA-2061
- USN-951-1
- MDVSA-2010:119
- APPLE-SA-2010-08-24-1
- http://support.apple.com/kb/HT4312
- oval:org.mitre.oval:def:9859
- RHSA-2010:0488
- SUSE-SR:2010:014
- http://www.samba.org/samba/security/CVE-2010-2063.html
- oval:org.mitre.oval:def:12427
- oval:org.mitre.oval:def:7115
- 20100616 Samba 3.3.12 Memory Corruption Vulnerability
- SSA:2010-169-01
Sources
- CVE-2010-2063 · CVE Program
- CVE-2010-2063 · NVD
- FIRST EPSS
- GHSA-ghx2-3q8p-8mw6 · GitHub Advisory Database · CC BY 4.0
- CVE-2010-2063 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences