Vulnerability Name:


Summary:A high rate of VLAN authentication attempts sent from an adjacent host on the local broadcast domain can trigger high memory utilization by the BBE subscriber management daemon (bbe-smgd), and lead to a denial of service condition. The issue was caused by attempting to process an unbounded number of pending VLAN authentication requests, leading to excessive memory allocation. This issue only affects devices configured for DHCPv4/v6 over AE auto-sensed VLANs, utilized in Broadband Edge (BBE) deployments. Other configurations are unaffected by this issue. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1R6-S2, 15.1R7; 16.1 versions prior to 16.1R5-S1, 16.1R6; 16.2 versions prior to 16.2R2-S2, 16.2R3; 17.1 versions prior to 17.1R2-S5, 17.1R3; 17.2 versions prior to 17.2R2.
CVSS v3 Severity:5.3 Medium (CVSS v3 Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
4.6 Medium (Temporal CVSS v3 Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
6.5 Medium (CCN CVSS v3 Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.7 Medium (CCN Temporal CVSS v3 Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/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): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:2.9 Low (CVSS v2 Vector: AV:A/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
6.1 Medium (CCN CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-399
References:Source: SECTRACK

Source: XF


Vulnerable Configuration:Configuration 1:
  • cpe:/o:juniper:junos:15.1:*:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1:r1:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1:r2:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1:r3:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1:r4:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1:r5:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1:r7:*:*:*:*:*:*

  • Configuration 2:
  • cpe:/o:juniper:junos:16.1:*:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:16.1:r1:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:16.1:r2:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:16.1:r3:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:16.1:r4:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:16.1:r6:*:*:*:*:*:*

  • Configuration 3:
  • cpe:/o:juniper:junos:16.2:r1:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:16.2:r3:*:*:*:*:*:*

  • Configuration 4:
  • cpe:/o:juniper:junos:17.1:r1:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:17.1:r3:*:*:*:*:*:*

  • Configuration 5:
  • cpe:/o:juniper:junos:17.2:r1:*:*:*:*:*:*

  • Denotes that component is vulnerable
    juniper junos 15.1
    juniper junos 15.1 r1
    juniper junos 15.1 r2
    juniper junos 15.1 r3
    juniper junos 15.1 r4
    juniper junos 15.1 r5
    juniper junos 15.1 r7
    juniper junos 16.1
    juniper junos 16.1 r1
    juniper junos 16.1 r2
    juniper junos 16.1 r3
    juniper junos 16.1 r4
    juniper junos 16.1 r6
    juniper junos 16.2 r1
    juniper junos 16.2 r3
    juniper junos 17.1 r1
    juniper junos 17.1 r3
    juniper junos 17.2 r1