CVE-2019-1849
"Cisco BGP MPLS EVPN DoS Vulnerability"
Description
A vulnerability in the Border Gateway Patrol (BGP) Multiprotocol Label Switching (MPLS)-based Ethernet VPN (EVPN) implementation of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to a logic error that occurs when the affected software processes specific EVPN routing information. An attacker could exploit this vulnerability by injecting malicious traffic patterns into the targeted EVPN network. A successful exploit could result in a crash of the l2vpn_mgr process on Provider Edge (PE) device members of the same EVPN instance (EVI). On each of the affected devices, a crash could lead to system instability and the inability to process or forward traffic through the device, resulting in a DoS condition that would require manual intervention to restore normal operating conditions.
INFO
Published Date :
May 16, 2019, 2:29 a.m.
Last Modified :
Oct. 9, 2019, 11:48 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.0
Exploitability Score :
2.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-1849.
| URL | Resource |
|---|---|
| http://www.securityfocus.com/bid/108342 | Third Party Advisory VDB Entry |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-iosxr-evpn-dos | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-1849 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-1849 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 Cisco Systems, Inc. AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Added CWE Cisco Systems, Inc. CWE-754 -
Initial Analysis by [email protected]
May. 17, 2019
Action Type Old Value New Value Added CVSS V2 (AV:A/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3 AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.securityfocus.com/bid/108342 No Types Assigned http://www.securityfocus.com/bid/108342 Third Party Advisory, VDB Entry Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-iosxr-evpn-dos No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-iosxr-evpn-dos Vendor Advisory Added CWE CWE-754 Added CPE Configuration OR *cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* versions from (including) 6.1.0 up to (excluding) 6.3.3 *cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* versions from (including) 6.4.0 up to (excluding) 6.4.2 *cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* versions from (including) 6.5.0 up to (excluding) 6.5.2 *cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:* versions from (including) 6.6.0 up to (excluding) 6.6.1 -
CVE Modified by [email protected]
May. 16, 2019
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/108342 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-1849 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-1849
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} -0.01%
score
0.20954
percentile