Linux Kernel 2.6.18 sctp_getsockopt information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel 2.6.18. The impacted element is the function sctp_getsockopt. Such manipulation leads to information disclosure. This vulnerability is listed as CVE-2008-4445. In addition, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.18 (Operating System) and classified as problematic. Affected by this issue is the function sctp_getsockopt. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

The sctp_auth_ep_set_hmacs function in net/sctp/auth.c in the Stream Control Transmission Protocol (sctp) implementation in the Linux kernel before 2.6.26.4, when the SCTP-AUTH extension is enabled, does not verify that the identifier index is within the bounds established by SCTP_AUTH_HMAC_ID_MAX, which allows local users to obtain sensitive information via a crafted SCTP_HMAC_IDENT IOCTL request involving the sctp_getsockopt function, a different vulnerability than CVE-2008-4113.

The bug was discovered 08/27/2008. The weakness was presented 10/06/2008 by Tobias Klein (Website). The advisory is shared for download at ubuntu.com. This vulnerability is handled as CVE-2008-4445 since 10/06/2008. The attack needs to be approached locally. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1592.

A public exploit has been developed in ANSI C. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 747 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 34444 (Debian DSA-1655-1 : linux-2.6.24 - denial of service/information leak/privilege escalation), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 116022 (SUSE Security Announcement: Linux Kernel (SUSE-SA:2008:053)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (45712), Tenable (34444), SecurityFocus (BID 31121†), OSVDB (48902†) and Secunia (SA32190†). See VDB-41704, VDB-44068 and VDB-43881 for similar entries. Once again VulDB remains the best 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: 6.2
VulDB Meta Temp Score: 5.6

VulDB Base Score: 6.2
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 34444
Nessus Name: Debian DSA-1655-1 : linux-2.6.24 - denial of service/information leak/privilege escalation
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 61777
OpenVAS Name: Debian Security Advisory DSA 1655-1 (linux-2.6.24)
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

09/20/2006 🔍
08/20/2008 +700 days 🔍
08/27/2008 +7 days 🔍
10/06/2008 +40 days 🔍
10/06/2008 +0 days 🔍
10/06/2008 +0 days 🔍
10/06/2008 +0 days 🔍
10/08/2008 +2 days 🔍
10/16/2008 +8 days 🔍
10/20/2008 +4 days 🔍
10/27/2008 +7 days 🔍
03/17/2015 +2332 days 🔍
05/26/2025 +3723 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: ubuntu.com
Researcher: Tobias Klein
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-4445 (🔍)
GCVE (CVE): GCVE-0-2008-4445
GCVE (VulDB): GCVE-100-44348

OVAL: 🔍

X-Force: 45712
SecurityFocus: 31121 - Linux Kernel 'SCTP' Module Multiple vulnerabilities
Secunia: 32190
OSVDB: 48902 - CVE-2008-4445 - Linux - Kernel - Information Disclosure Issue
SecurityTracker: 1021001
Vulnerability Center: 19875 - Linux kernel < 2.6.26.4 SCTP auth.c Vulnerability Allows Local Information Disclosure, Low

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 05/26/2025 07:43
Changes: 03/17/2015 16:11 (79), 08/20/2019 08:58 (12), 05/26/2025 07:43 (18)
Complete: 🔍
Cache ID: 216::103

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