GNU Samba up to 3.0.23d VFS Plugin afsacl.so sprintf infinite loop

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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in GNU Samba. It has been classified as critical. Affected is the function sprintf of the file afsacl.so of the component VFS Plugin. The manipulation leads to infinite loop. This vulnerability is listed as CVE-2007-0452. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in GNU Samba (File Transfer Software) and classified as critical. This issue affects the function sprintf of the file afsacl.so of the component VFS Plugin. The manipulation with an unknown input leads to a infinite loop vulnerability. Using CWE to declare the problem leads to CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

smbd in Samba 3.0.6 through 3.0.23d allows remote authenticated users to cause a denial of service (memory and CPU exhaustion) by renaming a file in a way that prevents a request from being removed from the deferred open queue, which triggers an infinite loop.

The weakness was presented 02/06/2007 by Mateusz Jurczyk and Gynvael Coldwind (Website). It is possible to read the advisory at us1.samba.org. The identification of this vulnerability is CVE-2007-0452 since 01/23/2007. The attack may be initiated remotely. The requirement for exploitation is a simple authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 67446 (Oracle Linux 3 / 4 : samba (ELSA-2007-0060)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165089 (SUSE Security Update for Samba (SUSE-SA:2007:016)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at samba.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (32304), Tenable (67446), SecurityFocus (BID 22403†), OSVDB (33101†) and Secunia (SA24046†). See VDB-2901, VDB-2902 and VDB-34832 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.5

VulDB Base Score: 6.3
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

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Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67446
Nessus Name: Oracle Linux 3 / 4 : samba (ELSA-2007-0060)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 58012
OpenVAS Name: Debian Security Advisory DSA 1257-1 (samba)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: samba.org

Timelineinfo

01/23/2007 🔍
02/05/2007 +13 days 🔍
02/05/2007 +0 days 🔍
02/05/2007 +0 days 🔍
02/05/2007 +0 days 🔍
02/05/2007 +0 days 🔍
02/06/2007 +1 days 🔍
02/06/2007 +0 days 🔍
02/12/2007 +5 days 🔍
02/12/2007 +0 days 🔍
07/12/2013 +2342 days 🔍
03/15/2021 +2803 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: us1.samba.org
Researcher: Mateusz Jurczyk, Gynvael Coldwind
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-0452 (🔍)
GCVE (CVE): GCVE-0-2007-0452
GCVE (VulDB): GCVE-100-2903

OVAL: 🔍

X-Force: 32304 - Samba afsacl.so VFS plugin format string, High Risk
SecurityFocus: 22403 - Samba Server VFS Plugin AFSACL.SO Remote Format String Vulnerability
Secunia: 24046 - Samba Denial of Service and Format String Vulnerability, Moderately Critical
OSVDB: 33101 - Samba VFS Plugin afsacl.so Format String
SecurityTracker: 1017588 - Samba Format String Bug in 'afsacl.so' VFS Plugin May Let Remote Users Execute Arbitrary Code
Vulnerability Center: 14241 - Samba smbd Denial of Service via File Renaming, Medium

See also: 🔍

Entryinfo

Created: 02/12/2007 11:49
Updated: 03/15/2021 08:53
Changes: 02/12/2007 11:49 (90), 06/08/2017 23:45 (11), 03/15/2021 08:53 (3)
Complete: 🔍
Cache ID: 216:1FA:103

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