CVE-2007-1497

IPv6 fragments bypass in nf_conntrack netfilter code

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

nf_conntrack in netfilter in the Linux kernel before 2.6.20.3 does not set nfctinfo during reassembly of fragmented packets, which leaves the default value as IP_CT_ESTABLISHED and might allow remote attackers to bypass certain rulesets using IPv6 fragments.

nf_conntrack en netfilter en el kernel de Linux anterior a 2.6.20.3 no fija nfctinfo durante el nuevo re-ensamble de paquetes fragmentados, lo cual deja el valor por defecto como IP_CT_ESTABLISHED y permitiría a atacantes remotos evitar ciertas reglas de asignación utilizando fragmentos IPv6.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2007-03-16 CVE Reserved
2007-03-16 CVE Published
2024-08-07 CVE Updated
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (19)

URL	Tag	Source
http://secunia.com/advisories/25228	Third Party Advisory
http://secunia.com/advisories/25288	Third Party Advisory
http://secunia.com/advisories/25392	Third Party Advisory
http://secunia.com/advisories/25961	Third Party Advisory
http://secunia.com/advisories/26620	Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.20.3	X_refsource_confirm
http://www.osvdb.org/33028	Vdb Entry
http://www.securityfocus.com/bid/23976	Vdb Entry
http://www.vupen.com/english/advisories/2007/0944	Vdb Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10457	Signature

URL	Date	SRC

URL	Date	SRC
http://secunia.com/advisories/24492	2017-10-11

URL	Date	SRC
http://www.debian.org/security/2007/dsa-1289	2017-10-11
http://www.mandriva.com/security/advisories?name=MDKSA-2007:171	2017-10-11
http://www.mandriva.com/security/advisories?name=MDKSA-2007:196	2017-10-11
http://www.novell.com/linux/security/advisories/2007_43_kernel.html	2017-10-11
http://www.redhat.com/support/errata/RHSA-2007-0347.html	2017-10-11
http://www.ubuntu.com/usn/usn-464-1	2017-10-11
https://access.redhat.com/security/cve/CVE-2007-1497	2007-05-16
https://bugzilla.redhat.com/show_bug.cgi?id=238947	2007-05-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 2.6.20.2 Search vendor "Linux" for product "Linux Kernel" and version " <= 2.6.20.2"		-		Affected