SB2019101402 - Multiple vulnerabilities in Juniper Junos OS 



SB2019101402 - Multiple vulnerabilities in Juniper Junos OS

Published: October 14, 2019

Security Bulletin ID SB2019101402
Severity
Medium
Patch available
YES
Number of vulnerabilities 24
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 24 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2019-0063)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when an MX Series Broadband Remote Access Server (BRAS) is configured as a Broadband Network Gateway (BNG) with DHCPv6 enabled. A remote attacker can send a specially crafted DHCP response message on a subscriber interface, crash jdhcpd and cause an extended denial of service condition on the target system.


2) Input validation error (CVE-ID: CVE-2019-0064)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing TCP packets if "set security zones security-zone <zone> tcp-rst" is configured. A remote attacker can send a specially crafted TCP packet, crash the flowd process and cause a denial of service on the target system.

Note: This vulnerability affects only Junos OS on SRX 5000 Series.


3) Input validation error (CVE-ID: CVE-2019-0065)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing SIP packets. A remote attacker can send a specially crafted SIP packet, crash the MS-PIC component on MS-MIC or MS-MPC and cause a sustained denial of service condition on the target sysem.

Note: This issue affects Junos OS on MX Series when the SIP ALG is enabled.


4) Input validation error (CVE-ID: CVE-2019-0066)

The vulnerability allows a remote attacker to cause a denial of service (DoS) condition on the target system.

The vulnerability exists due to an unexpected status return value weakness in the Next-Generation Multicast VPN (NG-mVPN) service. A remote attacker can send a specially crafted IPv4 packet to the device running BGP and cause a denial of service condition and core the routing protocol daemon (rpd) process.


5) Input validation error (CVE-ID: CVE-2019-0067)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when receipt of a specific link-local IPv6 packet destined to the RE. A remote attacker on adjacent network can send a specially crafted IPv6 packet, repeatedly crash the system and restart (vmcore) and cause a prolonged denial of service condition on the target system.

Note: This issue affects Junos OS devices with Multi-Chassis Link Aggregation Group (MC-LAG) enabled.


6) Input validation error (CVE-ID: CVE-2019-0068)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when the SRX flowd process processing specific multicast packets. A remote attacker on adjacent network can send specific multicast packets and repeatedly crash the target application.

Note: This vulnerability affects Junos OS on SRX Series.


7) Cleartext storage of sensitive information (CVE-ID: CVE-2019-0069)

The vulnerability allows a local user to view the password on the target system.

The vulnerability exists due to the affected software stores credentials used during device authentication unencrypted in its log file. A local authenticated user can obtain credentials.

Note: This vulnerability affects only the following versions of Junos OS:

  • 15.1X49 versions prior to 15.1X49-D110 on vSRX, SRX1500, SRX4000 Series
  • 15.1X53 versions prior to 15.1X53-D234 on QFX5110, QFX5200 Series
  • 15.1X53 versions prior to 15.1X53-D68 on QFX10K Series
  • 17.1 versions prior to 17.1R2-S8, 17.1R3, on QFX5110, QFX5200, QFX10K Series
  • 17.2 versions prior to 17.2R1-S7, 17.2R2-S6, 17.2R3 on QFX5110, QFX5200, QFX10K Series
  • 17.3 versions prior to 17.3R2 on vSRX, SRX1500, SRX4000, QFX5110, QFX5200, QFX10K Series
  • 14.1X53 versions prior to 14.1X53-D47 on ACX5000, EX4600, QFX5100 Series
  • 15.1 versions prior to 15.1R7 on ACX5000, EX4600, QFX5100 Series
  • 16.1R7 versions prior to 16.1R7 on ACX5000, EX4600, QFX5100 Series
  • 17.1 versions prior to 17.1R2-S10, 17.1R3 on ACX5000, EX4600, QFX5100 Series
  • 17.2 versions prior to 17.2R3 on ACX5000, EX4600, QFX5100 Series
  • 17.3 versions prior to 17.3R3 on ACX5000, EX4600, QFX5100 Series
  • 17.4 versions prior to 17.4R2 on ACX5000, EX4600, QFX5100 Series
  • 18.1 versions prior to 18.1R2 on ACX5000, EX4600, QFX5100 Series
  • 15.1X53 versions prior to 15.1X53-D496 on NFX Series
  • 17.2 versions prior to 17.2R3-S1 on NFX Series
  • 17.3 versions prior to 17.3R3-S4 on NFX Series
  • 17.4 versions prior to 17.4R2-S4, 17.4R3 on NFX Series
  • 18.1 versions prior to 18.1R3-S4 on NFX Series
  • 18.2 versions prior to 18.2R2-S3, 18.2R3 on NFX Series
  • 18.3 versions prior to 18.3R1-S3, 18.3R2 on NFX Series
  • 18.4 versions prior to 18.4R1-S1, 18.4R2 on NFX Series

8) Resource management error (CVE-ID: CVE-2019-0050)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an error when "srxpfe" process can crash under certain heavy traffic conditions. A remote attacker can send a specially crafted request and cause a denial of service condition.

Note: This vulnerability affects only Junos OS on SRX1500 platforms.


9) Path traversal (CVE-ID: CVE-2019-0074)

The vulnerability allows a local user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A local authenticated user can send a specially crafted HTTP request and read arbitrary files on the system.

Note: This vulnerability affects only Junos OS on NFX150 Series, QFX10K Series, EX9200 Series, MX Series and PTX Series with Next-Generation Routing Engine (NG-RE) and vmhost.


10) Input validation error (CVE-ID: CVE-2019-0075)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the srxpfe process on Protocol Independent Multicast (PIM). A remote attacker can send a specially crafted (PIM) messages, crash the srxpfe process, reboot FPC and cause a denial of service condition. 

Note: This vulnerability affects only Junos OS on SRX Series.


11) Improper validation of integrity check value (CVE-ID: CVE-2019-0071)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to an error when the Veriexec subsystem will fail to initialize, in essence disabling file integrity checking. A local authenticated user with shell access can install untrusted executable images, elevate privileges and gain full control of the system.

12) Incorrect default permissions (CVE-ID: CVE-2019-0073)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the PKI keys exported using the command "run request security pki key-pair export" have insecure file permissions. A local user with access to the system can view contents of files and directories or modify them.


13) Resource exhaustion (CVE-ID: CVE-2019-0051)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the SSL-Proxy feature on SRX devices fails to handle a hardware resource limitation. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Note: This vulnerability affects only Junos OS on SRX5000 Series


14) Input validation error (CVE-ID: CVE-2019-0070)

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to insufficient validation of user-supplied input. A local authenticated user can elevate his permissions to take control of other portions of the NFX platform and execute arbitrary commands outside their authorized scope of control.

Note: This vulnerability affects only Junos OS on NFX Series.


15) Stored Cross-site scripting (CVE-ID: CVE-2019-0047)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in J-Web interface. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


16) Session Fixation (CVE-ID: CVE-2019-0062)

The vulnerability allows a remote attacker to steal authenticated sessions.

The vulnerability exists in the J-Web due to the the affected software does not invalidate the previous session and create a new one upon successful login. A remote attacker can use social engineering techniques to fix and hijack a J-Web administrators web session and gain administrative access to the device.

17) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-0061)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insecure management daemon (MGD) configuration. A local authenticated user can gain administrative privileges due to a misconfiguration of the internal socket.


18) Input validation error (CVE-ID: CVE-2019-0060)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the flowd process when processing specific transit IP packets through an IPSec tunnel. A remote attacker can cause an extended Denial of Service (DoS) condition.

Note: This issue only occurs when IPSec tunnels are configured. Systems without IPSec tunnel configurations are not vulnerable to this issue.


19) Improper Privilege Management (CVE-ID: CVE-2019-0058)

The vulnerability allows a local user to escalate privilege on the target system.

The vulnerability exists due to missing access controls in the Veriexec subsystem. A local user can elevate privileges to gain full control of the target system.


20) Memory leak (CVE-ID: CVE-2019-0059)

The vulnerability allows a remote attacker to cause a denial of service (DoS) condition.

The vulnerability exists due to memory leak in the routing protocol process (rpd). A remote attacker can send specific commands from a peered BGP host, have those BGP states delivered to the vulnerable device and perform a denial of service attack.


21) Improper Authorization (CVE-ID: CVE-2019-0057)

The vulnerability allows a local user to bypass authorization checks.

The vulnerability exists due to missing authorization checks. A local user can bypass regular security controls to access the Junos Device Manager (JDM) application and take control of the system.


22) Insufficient Resource Pool (CVE-ID: CVE-2019-0056)

The vulnerability allows a remote attacker to cause a denial of service (DoS) condition.

The vulnerability exists due to the device's resource pool is not large enough to handle peak demand. A remote attacker can cause the device's Open Shortest Path First (OSPF) states to transition to Down and perform a denial of service attack.

Note: This issue only affects devices with three (3) or more MPC10's installed in a single chassis with OSPF enabled and configured on the device.


23) Improper Certificate Validation (CVE-ID: CVE-2019-0054)

The vulnerability allows a remote attacker to perform a man-in-the-middle (MiTM) attack.

The vulnerability exists due to an improper certificate validation weakness in the SRX Series Application Identification (app-id) signature update client. A remote attacker can perform MitM attack during app-id signature updates.


24) Buffer overflow (CVE-ID: CVE-2019-0055)

The vulnerability allows a remote attacker to cause a denial of service (DoS) condition.

The vulnerability exists due to a boundary error in the SIP ALG packet processing service. A remote attacker can send a specific types of valid SIP traffic to the device, cause flowd process to crash, trigger memory corruption and cause a denial of service condition.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.

References