Vulnerability Name:

CVE-2011-3273 (CCN-70180)

Assigned:2011-09-28
Published:2011-09-28
Updated:2012-05-14
Summary:Memory leak in Cisco IOS 15.0 through 15.1, when IPS or Zone-Based Firewall (aka ZBFW) is configured, allows remote attackers to cause a denial of service (memory consumption or device crash) via vectors that trigger many session creation flows, aka Bug ID CSCti79848.
CVSS v3 Severity:7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
5.8 Medium (Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
5.8 Medium (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-399
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2011-3273

Source: CCN
Type: SA46198
Cisco IOS IPS and Zone-Based Firewall Two Denial of Service Vulnerabilities

Source: CONFIRM
Type: UNKNOWN
http://tools.cisco.com/security/center/viewAlert.x?alertId=24123

Source: CCN
Type: cisco-sa-20110928-zbfw
Cisco IOS Software IPS and Zone-Based Firewall Vulnerabilities

Source: CISCO
Type: Vendor Advisory
20110928 Cisco IOS Software IPS and Zone-Based Firewall Vulnerabilities

Source: CCN
Type: OSVDB ID: 75927
Cisco IOS IPS / Zone-Based Firewall Leak New Session Flow Creation Memory Exhaustion Remote DoS

Source: CCN
Type: BID-49826
Cisco IOS IPS and Zone-Based Firewall Multiple Denial of Service Vulnerabilities

Source: XF
Type: UNKNOWN
ciscoios-creation-flows-dos(70180)

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios:15.0:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.0m:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.0sg:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.0xa:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.0xo:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.1gc:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.1m:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.1s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.1t:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.1xb:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/o:cisco:ios:15.0:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.1:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:cisco.oval:def:152
    V
    cisco-sa-20110928-zbfw-CVE-2011-3273
    2012-09-07
    BACK
    cisco ios 15.0
    cisco ios 15.0m
    cisco ios 15.0sg
    cisco ios 15.0xa
    cisco ios 15.0xo
    cisco ios 15.1
    cisco ios 15.1gc
    cisco ios 15.1m
    cisco ios 15.1s
    cisco ios 15.1t
    cisco ios 15.1xb
    cisco ios 15.0
    cisco ios 15.1