SB2018011014 - Multiple vulnerabilities in Juniper Junos
Published: January 10, 2018
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 vulnerabilities.
1) Security restrictions bypass (CVE-ID: CVE-2018-0009)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to improper access and privileges controls. A remote attacker can bypass the firewall to access resources on the target network when firewall rules are configured for custom application UUIDs that start with a zero.
2) Privilege escalation (CVE-ID: CVE-2018-0008)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:P/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a physically local attacker to gain elevated privileges on the target system.
The weakness exists due to improper access and privileges controls. A physically local attacker on the console can gain root access without authenticating after an authenticated administrator has run a commit script containing certain instructions and the system reboots into a "safe mode" authentication state.
3) Resource exhaustion (CVE-ID: CVE-2018-0004)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to improper validation of user-supplied input. A remote attacker can send a sustained sequence of traffic that, when a certain command is issued by the administrator, will consume excessive CPU resources on the target system and cause the forwarding plane and/or control plane to become inaccessible.
4) Resource exhaustion (CVE-ID: CVE-2018-0006)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows an adjacent attacker to cause DoS condition on the target system.
the weakness exists due to insufficient validation of user-supplied input. An adjacent attacker can send VLAN authentication attempts via the local broadcast domain to consume excessive memory on the target BBE subscriber management daemon (bbe-smgd) and cause denial of service conditions.
Remediation
Install update from vendor's website.