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Samba Multiple Buffer Overflow Vulnerabilities
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Secunia Advisory:
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SA27450
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Release Date:
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2007-11-15
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| Software: | Samba 2.x
Samba 3.x
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| | CVE reference: | CVE-2007-5398 (Secunia mirror)
CVE-2007-4572 (Secunia mirror)
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Description:
Some vulnerabilities have been reported in Samba, which can be exploited by malicious people to compromise a vulnerable system.
1) A boundary error exists within the "reply_netbios_packet()" function in nmbd/nmbd_packets.c when sending NetBIOS replies. This can be exploited to cause a stack-based buffer overflow by sending multiple specially crafted WINS "Name Registration" requests followed by a WINS "Name Query" request.
Successful exploitation allows execution of arbitrary code, but requires that Samba is configured to run as a WINS server (the "wins support" option is enabled).
2) A boundary error exists within the processing of GETDC logon requests. This can be exploited to cause a buffer overflow by sending specially crafted GETDC mailslot requests.
Successful exploitation of the vulnerability requires that Samba is configured as a Primary or Backup Domain Controller.
The vulnerabilities are reported in version 3.0.26a. Other versions may also be affected.
Solution:
Apply patches or update to version 3.0.27.
Patches for version 3.0.26a:
http://us1.samba.org/samba/ftp/patche...ity/samba-3.0.26a-CVE-2007-5398.patch
http://us1.samba.org/samba/ftp/patche...ity/samba-3.0.26a-CVE-2007-4572.patch
Provided and/or discovered by:
1) Alin Rad Pop, Secunia Research.
2) Reported by the vendor.
Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2007-90/
Samba:
http://us1.samba.org/samba/history/security.html
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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16 Related Secunia Security Advisories, displaying 10
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1. Samba "send_mailslot()" Buffer Overflow Vulnerability
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2. Samba "winbind nss info" Privilege Escalation Security Issue
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3. Samba Multiple Vulnerabilities
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4. Samba Denial of Service and Format String Vulnerability
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5. Samba Winbind Library Buffer Overflow Vulnerabilities
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6. Samba Multiple Share Connection Requests Denial of Service
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7. Samba Exposure of Machine Account Credentials
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8. Samba Security Descriptor Parsing Integer Overflow Vulnerability
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9. Samba QFILEPATHINFO Request Handler Buffer Overflow Vulnerability
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10. Samba Wildcard Filename Matching Denial of Service Vulnerability
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