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nvd логотип

CVE-2019-16021

Опубликовано: 23 сент. 2020
Источник: nvd
CVSS3: 8.6
CVSS3: 7.5
CVSS2: 5
EPSS Низкий

Описание

Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attacker could exploit these vulnerabilities by sending BGP EVPN update messages with malformed attributes to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit these vulnerabilities, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer.

Ссылки

Уязвимые конфигурации

Конфигурация 1

Одновременно

cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:*:*

Одно из

cpe:2.3:h:cisco:asr_9000:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:*
Конфигурация 2

Одновременно

cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:*

Одно из

cpe:2.3:h:cisco:asr_9000:-:*:*:*:*:*:-:*
cpe:2.3:h:cisco:asr_9000:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:-:*
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:-:*
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:-:*
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:-:*
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:-:*
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:carrier_routing_system:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ios_xrv_9000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5011:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:*
Конфигурация 3

Одновременно

cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*

Одно из

cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540l:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:*
Конфигурация 4

Одновременно

cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:*

Одно из

cpe:2.3:h:cisco:asr_9000:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:x64:*
cpe:2.3:h:cisco:ios_xrv_9000:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_1001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_1002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_1004:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5011:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_540l:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_5500:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_560:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:*

EPSS

Процентиль: 82%
0.01625
Низкий

8.6 High

CVSS3

7.5 High

CVSS3

5 Medium

CVSS2

Дефекты

CWE-399
NVD-CWE-noinfo

Связанные уязвимости

github логотип

GHSA-w626-fpjc-h33x

github
больше 3 лет назад

Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attacker could exploit these vulnerabilities by sending BGP EVPN update messages with malformed attributes to be processed by an affected system. A successful exploit could allow the attacker to cause the BGP process to restart unexpectedly, resulting in a DoS condition. The Cisco implementation of BGP accepts incoming BGP traffic only from explicitly defined peers. To exploit these vulnerabilities, the malicious BGP update message would need to come from a configured, valid BGP peer, or would need to be injected by the attacker into the victim's BGP network on an existing, valid TCP connection to a BGP peer.

fstec логотип

BDU:2020-00333

CVSS3: 8.6
fstec
около 6 лет назад

Уязвимость реализации протокола Border Gateway Protocol (BGP) технологии Ethernet VPN операционной системы Cisco IOS XR, позволяющая нарушителю вызвать отказ в обслуживании

EPSS

Процентиль: 82%
0.01625
Низкий

8.6 High

CVSS3

7.5 High

CVSS3

5 Medium

CVSS2

Дефекты

CWE-399
NVD-CWE-noinfo