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.
Published 2017-10-29 20:29:00
Updated 2017-11-18 16:16:50
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Input validationDenial of service

Threat overview for CVE-2017-16227

Top countries where our scanners detected CVE-2017-16227
Top open port discovered on systems with this issue 2601
IPs affected by CVE-2017-16227 35,167
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2017-16227!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2017-16227

1.12%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 83 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-16227

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
NIST
7.5
HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
NIST

CWE ids for CVE-2017-16227

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-16227

Products affected by CVE-2017-16227

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