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CVE-2017-10615: Juniper Junos: Authentication bypass

CVE-2017-10615 is rated critical with a CVSS v3.0 base score of 9.8 and affects Juniper Junos. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

A vulnerability in the pluggable authentication module (PAM) of Juniper Networks Junos OS may allow an unauthenticated network based attacker to potentially execute arbitrary code or crash daemons such as telnetd or sshd that make use of PAM. Affected Juniper Networks Junos OS releases are: 14.1 from 14.1R5 prior to 14.1R8-S4, 14.1R9; 14.1X53 prior to 14.1X53-D50 on EX and QFX series; 14.2 from 14.2R3 prior to 14.2R7-S8, 14.2R8; No other Junos OS releases are affected by this issue. No other Juniper Networks products are affected by this issue.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: None. No action from any user is needed.
  • Scope: Unchanged. Impact stays within the vulnerable component.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-20: Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected products

  • Juniper Junos: 14.1; 14.1 r1; 14.1 r2; 14.1 r3; 14.1 r4; 14.1 r5; 14.1 r6; 14.1 r7; 14.1 r9; 14.1x53; 14.1x53 d10; 14.1x53 d15

References