CVE-2009-4272

kernel: emergency route cache flushing leads to node deadlock

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A certain Red Hat patch for net/ipv4/route.c in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 allows remote attackers to cause a denial of service (deadlock) via crafted packets that force collisions in the IPv4 routing hash table, and trigger a routing "emergency" in which a hash chain is too long. NOTE: this is related to an issue in the Linux kernel before 2.6.31, when the kernel routing cache is disabled, involving an uninitialized pointer and a panic.

Cierto parche de Red Hat para net/ipv4/route.c en el kernel de Linux v2.6.18 en Red Hat Enterprise Linux (RHEL) v5 permite a atacantes remotos producir una denegación de servicio (punto muerto) a traves de paquetes manipulados que que fuerzan colisiones en la tabla de hash de enrutamiento IPv4, e inicia un enrutado de "emergencia" en el cual la cadena de hash es demasiado larga. NOTA: Esta vulnerabilidad esta relacionada con otra del cache de enrutamiento del kernel cuando el cache de enrutamiento del kernel esta desactivado, implicando un puntero no inicializado y panic.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2009-12-10 CVE Reserved
2010-01-27 CVE Published
2024-02-16 EPSS Updated
2024-08-07 CVE Updated
2024-08-07 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-476: NULL Pointer Dereference
CWE-667: Improper Locking

CAPEC

References (13)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=73e42897e8e5619eacb787d2ce69be12f47cfc21	Broken Link
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b6280b47a7a42970d098a3059f4ebe7e55e90d8d	Broken Link
http://support.avaya.com/css/P8/documents/100073666	Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31	Broken Link
http://www.openwall.com/lists/oss-security/2010/01/20/1	Mailing List
http://www.openwall.com/lists/oss-security/2010/01/20/6	Mailing List
https://exchange.xforce.ibmcloud.com/vulnerabilities/55808	Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11167	Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7026	Broken Link

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=545411	2024-08-07

URL	Date	SRC

URL	Date	SRC
https://rhn.redhat.com/errata/RHSA-2010-0046.html	2024-02-15
https://rhn.redhat.com/errata/RHSA-2010-0095.html	2024-02-15
https://access.redhat.com/security/cve/CVE-2009-4272	2010-02-09

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"	2.6.18 Search vendor "Linux" for product "Linux Kernel" and version "2.6.18"	-	Affected	in	Redhat Search vendor "Redhat"	Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"	5.0 Search vendor "Redhat" for product "Enterprise Linux" and version "5.0"	-	Safe
Redhat Search vendor "Redhat"		Virtualization Search vendor "Redhat" for product "Virtualization"				5.0 Search vendor "Redhat" for product "Virtualization" and version "5.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				5.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "5.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus"				5.4 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "5.4"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				5.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "5.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				5.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "5.0"		-		Affected