CVE-2017-16227

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The aspath_put function in bgpd/bgp_aspath.c in Quagga before 1.2.2 allows remote attackers to cause a denial of service (session drop) via BGP UPDATE messages, because AS_PATH size calculation for long paths counts certain bytes twice and consequently constructs an invalid message.

La función aspath_put en bgpd/bgp_aspath.c en Quagga en versiones anteriores a la 1.2.2 permite que los atacantes remotos provoquen una denegación de servicio (caída de sesión) mediante mensajes BGP Update, ya que el cálculo del tamaño de AS_PATH cuanta una serie de bytes dos veces y en consecuencia construye un menaje no válido.

*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

2017-10-29 CVE Reserved
2017-10-29 CVE Published
2023-05-25 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (5)

URL	Tag	Source
http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txt	Issue Tracking

URL	Date	SRC

URL	Date	SRC
https://bugs.debian.org/879474	2017-11-18
https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008	2017-11-18
https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html	2017-11-18

URL	Date	SRC
http://www.debian.org/security/2017/dsa-4011	2017-11-18

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Quagga Search vendor "Quagga"		Quagga Search vendor "Quagga" for product "Quagga"				<= 1.2.1 Search vendor "Quagga" for product "Quagga" and version " <= 1.2.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected