CVE-2015-4293

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The packet-reassembly implementation in Cisco IOS XE 3.13S and earlier allows remote attackers to cause a denial of service (CPU consumption or packet loss) via fragmented (1) IPv4 or (2) IPv6 packets that trigger ATTN-3-SYNC_TIMEOUT errors after reassembly failures, aka Bug ID CSCuo37957.

Vulnerabilidad en la implementación del ensamblado de paquetes en Cisco IOS XE 3.13S y versiones anteriores, permite a atacantes remotos causar una denegación de servicio (consumo de CPU o pérdida del paquete) a través de paquetes fragmentados (1) IPv4 o (2) IPv6 que desencadenan errores ATTN-3-SYNC_TIMEOUT tras fallos en el ensamblado, también conocido como Bug ID CSCuo37957.

*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

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-06-04 CVE Reserved
2015-07-30 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-399: Resource Management Errors

CAPEC

References (2)

URL	Tag	Source
http://www.securitytracker.com/id/1033122	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://tools.cisco.com/security/center/viewAlert.x?alertId=40215	2015-08-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.1.0 Search vendor "Cisco" for product "Ios Xe" and version "2.1.0"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.1.1 Search vendor "Cisco" for product "Ios Xe" and version "2.1.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.1.2 Search vendor "Cisco" for product "Ios Xe" and version "2.1.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.2.1 Search vendor "Cisco" for product "Ios Xe" and version "2.2.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.2.2 Search vendor "Cisco" for product "Ios Xe" and version "2.2.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.2.3 Search vendor "Cisco" for product "Ios Xe" and version "2.2.3"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.3.0 Search vendor "Cisco" for product "Ios Xe" and version "2.3.0"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.3.0t Search vendor "Cisco" for product "Ios Xe" and version "2.3.0t"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.3.1t Search vendor "Cisco" for product "Ios Xe" and version "2.3.1t"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.3.2 Search vendor "Cisco" for product "Ios Xe" and version "2.3.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.4.0 Search vendor "Cisco" for product "Ios Xe" and version "2.4.0"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.4.1 Search vendor "Cisco" for product "Ios Xe" and version "2.4.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.5.0 Search vendor "Cisco" for product "Ios Xe" and version "2.5.0"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.5.1 Search vendor "Cisco" for product "Ios Xe" and version "2.5.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.5.2 Search vendor "Cisco" for product "Ios Xe" and version "2.5.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.6.0 Search vendor "Cisco" for product "Ios Xe" and version "2.6.0"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.6.1 Search vendor "Cisco" for product "Ios Xe" and version "2.6.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				2.6.2 Search vendor "Cisco" for product "Ios Xe" and version "2.6.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.10s.0 Search vendor "Cisco" for product "Ios Xe" and version "3.10s.0"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.10s.0a Search vendor "Cisco" for product "Ios Xe" and version "3.10s.0a"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.10s.1 Search vendor "Cisco" for product "Ios Xe" and version "3.10s.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.10s.2 Search vendor "Cisco" for product "Ios Xe" and version "3.10s.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.10s.3 Search vendor "Cisco" for product "Ios Xe" and version "3.10s.3"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.11s.0 Search vendor "Cisco" for product "Ios Xe" and version "3.11s.0"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.11s.1 Search vendor "Cisco" for product "Ios Xe" and version "3.11s.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.11s.2 Search vendor "Cisco" for product "Ios Xe" and version "3.11s.2"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.12s.0 Search vendor "Cisco" for product "Ios Xe" and version "3.12s.0"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.12s.1 Search vendor "Cisco" for product "Ios Xe" and version "3.12s.1"		-		Affected
Cisco Search vendor "Cisco"		Ios Xe Search vendor "Cisco" for product "Ios Xe"				3.13s.0 Search vendor "Cisco" for product "Ios Xe" and version "3.13s.0"		-		Affected