rsyslog up to 4.1.1 Access Restriction AllowedSender access control

CVSS Meta Temp Score
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in rsyslog and classified as critical. Affected is an unknown function of the component Access Restriction. This manipulation of the argument AllowedSender causes access control. This vulnerability is tracked as CVE-2008-5617. No exploit exists. The affected component should be upgraded. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Detailsinfo

A vulnerability has been found in rsyslog and classified as critical. Affected by this vulnerability is an unknown part of the component Access Restriction. The manipulation of the argument AllowedSender with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect integrity, and availability. The summary by CVE is:

The ACL handling in rsyslog 3.12.1 to 3.20.0, 4.1.0, and 4.1.1 does not follow $AllowedSender directive, which allows remote attackers to bypass intended access restrictions and spoof log messages or create a large number of spurious messages.

The bug was discovered 12/04/2008. The weakness was disclosed 12/16/2008 (Website). The advisory is shared at rsyslog.com. This vulnerability is known as CVE-2008-5617 since 12/16/2008. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 12 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 35232 (Fedora 9 : rsyslog-3.20.2-2.fc9 (2008-11538)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165638 (SUSE Enterprise Linux Security Update (SUSE-SR:2009:001)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 5 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (47080), Tenable (35232), SecurityFocus (BID 32630†), OSVDB (50484†) and Secunia (SA32857†). The entry VDB-45518 is pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 7.8

VulDB Base Score: 8.2
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 35232
Nessus Name: Fedora 9 : rsyslog-3.20.2-2.fc9 (2008-11538)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 860213
OpenVAS Name: Family Connections argv[1] Parameter Remote Arbitrary Command Execution Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

12/04/2008 🔍
12/04/2008 +0 days 🔍
12/16/2008 +12 days 🔍
12/16/2008 +0 days 🔍
12/16/2008 +0 days 🔍
12/16/2008 +0 days 🔍
12/21/2008 +5 days 🔍
12/21/2008 +0 days 🔍
12/28/2008 +7 days 🔍
03/17/2015 +2270 days 🔍
05/29/2025 +3726 days 🔍

Sourcesinfo

Advisory: rsyslog.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-5617 (🔍)
GCVE (CVE): GCVE-0-2008-5617
GCVE (VulDB): GCVE-100-45517
X-Force: 47080
SecurityFocus: 32630 - RSyslog '$AllowedSender' Configuration Directive Security Bypass Vulnerability
Secunia: 32857
OSVDB: 50484 - RSyslog - '$AllowedSender' Configuration Directive Security Bypass Issue
Vulnerability Center: 20336 - Rsyslog ACL Handling Vulnerability Allows Remote Bypass Restrictions and DoS, Medium

See also: 🔍

Entryinfo

Created: 03/17/2015 04:11 PM
Updated: 05/29/2025 02:26 PM
Changes: 03/17/2015 04:11 PM (72), 08/22/2019 08:50 PM (8), 05/29/2025 02:26 PM (20)
Complete: 🔍
Cache ID: 244:3A8:40

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