Linux Kernel 2.4.5 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.0$0-$5k0.00

A vulnerability has been found in Linux Kernel 2.4.5 (Operating System) and classified as critical. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The asn1 implementation in (a) the Linux kernel 2.4 before 2.4.36.6 and 2.6 before 2.6.25.5, as used in the cifs and ip_nat_snmp_basic modules; and (b) the gxsnmp package; does not properly validate length values during decoding of ASN.1 BER data, which allows remote attackers to cause a denial of service (crash) or execute arbitrary code via (1) a length greater than the working buffer, which can lead to an unspecified overflow; (2) an oid length of zero, which can lead to an off-by-one error; or (3) an indefinite length for a primitive encoding.

The bug was discovered 06/06/2008. The weakness was published 06/09/2008 by Wei Wang with McAfee (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2008-1673 since 04/03/2008. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 33173 (Debian DSA-1592-1 : linux-2.6 - heap overflow), 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 165701 (SUSE Enterprise Linux Security Update Linux Kernel (SUSE-SA:2008:048)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 6269.

The vulnerability is also documented in the databases at X-Force (42921) and Tenable (33173). Similar entries are available at 42988, 42701, 43656 and 43584.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.0
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

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Nessus ID: 33173
Nessus Name: Debian DSA-1592-1 : linux-2.6 - heap overflow
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 61108
OpenVAS Name: Debian Security Advisory DSA 1592-1 (linux-2.6)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Timelineinfo

04/03/2008 🔍
06/06/2008 +64 days 🔍
06/06/2008 +0 days 🔍
06/09/2008 +3 days 🔍
06/09/2008 +0 days 🔍
06/09/2008 +0 days 🔍
06/09/2008 +0 days 🔍
06/09/2008 +0 days 🔍
06/15/2008 +6 days 🔍
06/16/2008 +1 days 🔍
03/16/2015 +2464 days 🔍
08/11/2019 +1609 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: securityfocus.com
Researcher: Wei Wang
Organization: McAfee
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-1673 (🔍)
OVAL: 🔍

X-Force: 42921
SecurityTracker: 1020210
Vulnerability Center: 18601 - Linux kernel 2.4-2.4.36.5, 2.6-2.6.25.4 Remote Code Execution or DoS when Decoding ASN.1 BER data, High
SecurityFocus: 29589 - Linux Kernel BER Decoding Remote Buffer Overflow Vulnerability
Secunia: 30000
OSVDB: 46104 - CVE-2008-1673 - Linux - Kernel - Buffer Overflow Issue
Vupen: ADV-2008-1770

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Entryinfo

Created: 03/16/2015 17:00
Updated: 08/11/2019 14:51
Changes: 03/16/2015 17:00 (78), 08/11/2019 14:51 (13)
Complete: 🔍

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