Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | samba | 2:3.4.0~pre1-1 | — |
| Debian 13 | samba | 2:3.4.0~pre1-1 | — |
| Debian 12 | samba | 2:3.4.0~pre1-1 | — |
| Debian 5.0 | samba | 2:3.2.5-4lenny12 | DSA-2061-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | libtalloc +1 | 1.2.0-52.el5_5 | RHSA-2010:0488 |
| RHEL 5 | libtdb +2 | 1.1.2-52.el5_5 | RHSA-2010:0488 |
| RHEL 5 | samba +5 | 3.0.33-3.29.el5_5 | RHSA-2010:0488 |
| RHEL 5 | samba3x +7 | 3.3.8-0.52.el5_5 | RHSA-2010:0488 |
| RHEL 4 | samba +3 | 3.0.33-0.19.el4_8.1 | RHSA-2010:0488 |
| RHEL 3 | samba +3 | 3.0.9-1.3E.17 | RHSA-2010:0488 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5.4 EUS | samba +3 | 3.0.33-3.15.el5_4.2 | RHSA-2010:0488 |
| RHEL 5.3 EUS | samba +3 | 3.0.33-3.7.el5_3.2 | RHSA-2010:0488 |
| RHEL 4.7 EUS | samba +3 | 3.0.28-0.10.el4_7 | RHSA-2010:0488 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | samba | 4.5.0-1.1 | openSUSE-SU-2024:10069-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Metasploit 1 module
-
Samba chain_reply Memory Corruption (Linux x86)
exploit/linux/samba/chain_reply
Exploit-DB 1
- Samba 3.3.12 (Linux x86) - 'chain_reply' Memory Corruption (Metasploit) EDB-16860 · remote · Sep 4, 2010 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- RHSA-2010:0488 Red Hat Security Advisory: samba and samba3x security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-2061-1 samba - arbitrary code execution Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10069-1 ctdb-4.5.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- HPSBUX02657 vendor-advisory
- samba-smb1-code-execution(59481) vdb-entry
- 65518 vdb-entry
- HPSBUX02609 vendor-advisory
- 40884 vdb-entry
- [samba-announce] 20100616 Samba 3.3.13 Security Release Available for Download mailing-list
- 40210 third-party-advisory
- http://www.samba.org/samba/ftp/history/samba-3.3.13.html
- http://www.samba.org/samba/ftp/patches/security/samba-3.3.12-CVE-2010-2063.patch
- 40145 third-party-advisory
- ADV-2010-1507 vdb-entry
- http://www.samba.org/samba/ftp/patches/security/samba-3.0.37-CVE-2010-2063.patch
- ADV-2010-1505 vdb-entry
- 40293 third-party-advisory
- DSA-2061 vendor-advisory
- USN-951-1 vendor-advisory
- MDVSA-2010:119 vendor-advisory
- APPLE-SA-2010-08-24-1 vendor-advisory
- 40221 third-party-advisory
- ADV-2010-1504 vdb-entry
- http://support.apple.com/kb/HT4312
- oval:org.mitre.oval:def:9859 vdb-entry signature
- RHSA-2010:0488 vendor-advisory
- SUSE-SR:2010:014 vendor-advisory
- ADV-2010-1486 vdb-entry
- 42319 third-party-advisory
- http://www.samba.org/samba/security/CVE-2010-2063.html
- oval:org.mitre.oval:def:12427 vdb-entry signature
- 1024107 vdb-entry
- ADV-2010-1517 vdb-entry
- ADV-2010-3063 vdb-entry
- oval:org.mitre.oval:def:7115 vdb-entry signature
- 20100616 Samba 3.3.12 Memory Corruption Vulnerability third-party-advisory
- SSA:2010-169-01 vendor-advisory