CVE-2015-0593
The Zone-Based Firewall implementation in Cisco IOS 12.4(122)T and earlier does not properly manage session-object structures, which allows remote attackers to cause a denial of service (device reload) via crafted network traffic, aka Bug ID CSCul65003.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Zone-Based Firewall implementation in Cisco IOS 12.4(122)T and earlier does not properly manage session-object structures, which allows remote attackers to cause a denial of service (device reload) via crafted network traffic, aka Bug ID CSCul65003.
- CVSS 2.0
- 7.1 HIGHAV:N/AC:M/Au:N/C:N/I:N/A:C
- EPSS
- 1.55% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- cisco/ios
- Source
- psirt@cisco.com
References
- http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2015-0593Vendor Advisory
- http://tools.cisco.com/security/center/viewAlert.x?alertId=37417Vendor Advisory
- http://www.securityfocus.com/bid/72549
- https://exchange.xforce.ibmcloud.com/vulnerabilities/100757
- http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2015-0593Vendor Advisory
- http://tools.cisco.com/security/center/viewAlert.x?alertId=37417Vendor Advisory
- http://www.securityfocus.com/bid/72549
- https://exchange.xforce.ibmcloud.com/vulnerabilities/100757
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.