Vulnerability Name:

CVE-2017-3803 (CCN-120944)

Assigned:2016-12-21
Published:2017-01-18
Updated:2019-10-03
Summary:A vulnerability in the Cisco IOS Software forwarding queue of Cisco 2960X and 3750X switches could allow an unauthenticated, adjacent attacker to cause a memory leak in the software forwarding queue that would eventually lead to a partial denial of service (DoS) condition. More Information: CSCva72252. Known Affected Releases: 15.2(2)E3 15.2(4)E1. Known Fixed Releases: 15.2(2)E6 15.2(4)E3 15.2(5)E1 15.2(5.3.28i)E1 15.2(6.0.49i)E 3.9(1)E.
CVSS v3 Severity:4.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L)
4.1 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
4.7 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L)
4.1 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:3.3 Low (CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
3.3 Low (CCN CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-772
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2017-3803

Source: BID
Type: Third Party Advisory, VDB Entry
95632

Source: CCN
Type: BID-95632
Cisco Catalyst 2960 and 3750 Series Switches CVE-2017-3803 Denial of Service Vulnerability

Source: SECTRACK
Type: UNKNOWN
1037657

Source: XF
Type: UNKNOWN
cisco-cve20173803-dos(120944)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20170118-catalyst
Cisco IOS for Catalyst 2960X and 3750X Switches Denial of Service Vulnerability

Source: CONFIRM
Type: Mitigation, Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170118-catalyst

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios:15.2(2)e3:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.2(4)e1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco ios 15.2(2)e3
    cisco ios 15.2(4)e1