Input validation error in Cisco ASR 5000 Series Aggregation Services Routers



Published: 2020-06-23
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-3244
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Cisco ASR 5000 Series
Hardware solutions / Firmware

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU29213

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3244

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient validation of user-supplied input in the Enhanced Charging Service (ECS) functionality. A remote attacker can send a specially crafted HTTP request, bypass the traffic classification rules and potentially avoid being charged for traffic consumption.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco ASR 5000 Series: 21.4.5

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr5k-ecs-bypass-2LqfPCL


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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