5.8med

CVE-2018-0281

A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to restart an in…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
5.8
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.4%
percentile 72%
Public exploits
0
none known

Summary

A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to restart an instance of the Snort detection engine on an affected device, resulting in a brief denial of service (DoS) condition. The vulnerability is due to the incorrect handling of a Transport Layer Security (TLS) extension during TLS connection setup for the affected software. An attacker could exploit this vulnerability by sending a crafted TLS connection setup request to an affected device. A successful exploit could allow the attacker to cause the Snort detection engine on the affected device to restart, resulting in a DoS condition. Cisco Bug IDs: CSCvg97808.

CISA SSVC assessment

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
23 mo ago

Exploit prediction (EPSS)

1.36% probability of exploitation in the next 30 days, higher than 72% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.05.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
NVD2.05.0AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • n/a Cisco Firepower System Software

Classification

Weakness
  • CWE-310 Cryptographic Issues
  • CWE-319 Cleartext Transmission of Sensitive Information

References

  • securityfocus.com /bid/104096 · vdb-entry, x_refsource_BID, x_transferred
  • tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-fpwr-txdos · x_refsource_CONFIRM, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.