Vulnerability Name:

CVE-2017-2346 (CCN-128503)

Assigned:2016-12-01
Published:2017-07-13
Updated:2019-10-09
Summary:An MS-MPC or MS-MIC Service PIC may crash when large fragmented packets are passed through an Application Layer Gateway (ALG). Repeated crashes of the Service PC can result in an extended denial of service condition. The issue can be seen only if NAT or stateful-firewall rules are configured with ALGs enabled. This issue was caused by the code change for PR 1182910 in Junos OS 14.1X55-D30, 14.1X55-D35, 14.2R7, 15.1R5, and 16.1R2. No other versions of Junos OS and no other Juniper Networks products or platforms are affected by this issue. Affected releases are Juniper Networks Junos OS on MX platforms running: 14.1X55 from 14.1X55-D30 to releases prior to 14.1X55-D35; 14.2R from 14.2R7 to releases prior to 14.2R7-S4, 14.2R8; 15.1R from 15.1R5 to releases prior to 15.1R5-S2, 15.1R6; 16.1R from 16.1R2 to releases prior to 16.1R3-S2, 16.1R4.
CVSS v3 Severity:5.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/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): Network
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
5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/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): Network
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
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.4 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2017-2346

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1038895

Source: XF
Type: UNKNOWN
juniper-cve20172346-dos(128503)

Source: CCN
Type: Juniper Networks Security Bulletin JSA10794
MS-MPC or MS-MIC crash when passing large fragmented traffic through an ALG (CVE-2017-2346)

Source: CONFIRM
Type: Vendor Advisory
https://kb.juniper.net/JSA10794

Vulnerable Configuration:Configuration 1:
  • cpe:/o:juniper:junos:14.1x55:-:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.1x55:d30:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.2:r:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.2:r1:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.2:r2:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.2:r3:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.2:r4:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.2:r5:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.2:r6:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.2:r7:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1:r:*:*:*:*:*:*
  • 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:r6:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:16.1:r:*:*:*:*:*:*
  • 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:*:*:*:*:*:*
  • AND
  • cpe:/h:juniper:mx:-:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/o:juniper:junos:16.1:r:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:15.1:r:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.2:r:*:*:*:*:*:*
  • OR cpe:/o:juniper:junos:14.1x55:-:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    juniper junos 14.1x55
    juniper junos 14.1x55 d30
    juniper junos 14.2 r
    juniper junos 14.2 r1
    juniper junos 14.2 r2
    juniper junos 14.2 r3
    juniper junos 14.2 r4
    juniper junos 14.2 r5
    juniper junos 14.2 r6
    juniper junos 14.2 r7
    juniper junos 15.1 r
    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 r6
    juniper junos 16.1 r
    juniper junos 16.1 r1
    juniper junos 16.1 r2
    juniper junos 16.1 r3
    juniper junos 16.1 r4
    juniper mx -
    juniper junos 16.1 r
    juniper junos 15.1 r
    juniper junos 14.2 r
    juniper junos 14.1x55 -