Vulnerability Details : CVE-2017-2346
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.
Vulnerability category: Denial of service
Products affected by CVE-2017-2346
- cpe:2.3:o:juniper:junos:14.2:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:14.2:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:14.1x55:*:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:14.2:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:14.2:r4:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:14.2:r5:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:14.2:r6:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:14.1x55:d30:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:14.2:r7:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:16.1:r1:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1:r6:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1:r5:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:16.1:r4:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:16.1:r2:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:16.1:r3:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1:r:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:16.1:r:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:14.2:r:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-2346
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 39 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-2346
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
Juniper Networks, Inc. |
References for CVE-2017-2346
-
https://kb.juniper.net/JSA10794
Juniper Networks - 2017-07 Security Bulletin: MS-MPC or MS-MIC crash when passing large fragmented traffic through an ALG (CVE-2017-2346)Vendor Advisory
-
http://www.securitytracker.com/id/1038895
Juniper Junos on MX Series Routers Fragmented Packet Processing Flaw Lets Remote Users Cause the Target Service to Crash - SecurityTrackerThird Party Advisory;VDB Entry
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