Linux Kernel 2.6.18 sctp_getsockopt_hmac_ident 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. This affects the function sctp_getsockopt_hmac_ident. Executing a manipulation can lead to information disclosure. This vulnerability appears as CVE-2008-4113. In addition, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Linux Kernel 2.6.18 (Operating System) and classified as problematic. This vulnerability affects the function sctp_getsockopt_hmac_ident. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

The sctp_getsockopt_hmac_ident function in net/sctp/socket.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, relies on an untrusted length value to limit copying of data from kernel memory, which allows local users to obtain sensitive information via a crafted SCTP_HMAC_IDENT IOCTL request involving the sctp_getsockopt function.

The bug was discovered 09/09/2008. The weakness was presented 09/16/2008 by Tobias Klein (Website). The advisory is shared for download at xforce.iss.net. This vulnerability was named CVE-2008-4113 since 09/16/2008. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1592.

A public exploit has been developed by Jon Oberheide in ANSI C and been published 4 months after the advisory. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 727 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 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (45188), Exploit-DB (7618), Tenable (34444), SecurityFocus (BID 31121†) and OSVDB (48420†). See VDB-41704, VDB-44348 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

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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

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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
Author: Jon Oberheide
Programming Language: 🔍
Download: 🔍

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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: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Timelineinfo

09/20/2006 🔍
08/20/2008 +700 days 🔍
09/09/2008 +20 days 🔍
09/09/2008 +0 days 🔍
09/16/2008 +7 days 🔍
09/16/2008 +0 days 🔍
09/16/2008 +0 days 🔍
10/08/2008 +22 days 🔍
10/16/2008 +8 days 🔍
10/20/2008 +4 days 🔍
10/27/2008 +7 days 🔍
12/29/2008 +63 days 🔍
12/29/2008 +0 days 🔍
03/17/2015 +2269 days 🔍
05/26/2025 +3723 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: xforce.iss.net
Researcher: Tobias Klein
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-4113 (🔍)
GCVE (CVE): GCVE-0-2008-4113
GCVE (VulDB): GCVE-100-44068

OVAL: 🔍

X-Force: 45188
SecurityFocus: 31121 - Linux Kernel 'SCTP' Module Multiple vulnerabilities
Secunia: 32190
OSVDB: 48420 - CVE-2008-4113 - Linux - Kernel - Information Disclosure Issue
SecurityTracker: 1021000
Vulnerability Center: 19874 - Linux kernel < 2.6.26.4 SCTP socket.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 (84), 08/20/2019 08:47 (12), 11/21/2024 14:26 (17), 05/26/2025 07:43 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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