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Vulnerability Details : CVE-2021-0208

An improper input validation vulnerability in the Routing Protocol Daemon (RPD) service of Juniper Networks Junos OS allows an attacker to send a malformed RSVP packet when bidirectional LSPs are in use, which when received by an egress router crashes the RPD causing a Denial of Service (DoS) condition. Continued receipt of the packet will sustain the Denial of Service. This issue affects: Juniper Networks Junos OS: All versions prior to 17.3R3-S10 except 15.1X49-D240 for SRX series; 17.4 versions prior to 17.4R3-S2; 18.1 versions prior to 18.1R3-S10; 18.2 versions prior to 18.2R2-S7, 18.2R3-S4; 18.3 versions prior to 18.3R3-S2; 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S2; 19.1 versions prior to 19.1R1-S5, 19.1R3-S3; 19.2 versions prior to 19.2R3; 19.3 versions prior to 19.3R2-S5, 19.3R3; 19.4 versions prior to 19.4R2-S2, 19.4R3-S1; 20.1 versions prior to 20.1R1-S4, 20.1R2; 15.1X49 versions prior to 15.1X49-D240 on SRX Series. Juniper Networks Junos OS Evolved: 19.3 versions prior to 19.3R2-S5-EVO; 19.4 versions prior to 19.4R2-S2-EVO; 20.1 versions prior to 20.1R1-S4-EVO.
Publish Date : 2021-01-15 Last Update Date : 2021-10-25
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- CVSS Scores & Vulnerability Types

CVSS Score
3.3
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 20

- Products Affected By CVE-2021-0208

# Product Type Vendor Product Version Update Edition Language
1 OS Juniper Junos 17.4 R2-s2 * * Version Details Vulnerabilities
2 OS Juniper Junos 17.4 R2-s8 * * Version Details Vulnerabilities
3 OS Juniper Junos 17.4 R1-s7 * * Version Details Vulnerabilities
4 OS Juniper Junos 17.4 R1-s1 * * Version Details Vulnerabilities
5 OS Juniper Junos 17.4 R2-s3 * * Version Details Vulnerabilities
6 OS Juniper Junos 17.4 R2 * * Version Details Vulnerabilities
7 OS Juniper Junos 17.4 R2-s9 * * Version Details Vulnerabilities
8 OS Juniper Junos 17.4 R1-s2 * * Version Details Vulnerabilities
9 OS Juniper Junos 17.4 R2-s4 * * Version Details Vulnerabilities
10 OS Juniper Junos 17.4 R2-s1 * * Version Details Vulnerabilities
11 OS Juniper Junos 17.4 R3 * * Version Details Vulnerabilities
12 OS Juniper Junos 17.4 R1-s4 * * Version Details Vulnerabilities
13 OS Juniper Junos 17.4 R2-s5 * * Version Details Vulnerabilities
14 OS Juniper Junos 17.4 R2-s10 * * Version Details Vulnerabilities
15 OS Juniper Junos 17.4 R3-s1 * * Version Details Vulnerabilities
16 OS Juniper Junos 17.4 R2-s6 * * Version Details Vulnerabilities
17 OS Juniper Junos 17.4 R1-s5 * * Version Details Vulnerabilities
18 OS Juniper Junos 17.4 - * * Version Details Vulnerabilities
19 OS Juniper Junos 17.4 R2-s11 * * Version Details Vulnerabilities
20 OS Juniper Junos 17.4 R2-s7 * * Version Details Vulnerabilities
21 OS Juniper Junos 17.4 R1-s6 * * Version Details Vulnerabilities
22 OS Juniper Junos 17.4 R1 * * Version Details Vulnerabilities
23 OS Juniper Junos 18.1 R1 * * Version Details Vulnerabilities
24 OS Juniper Junos 18.1 R3-s7 * * Version Details Vulnerabilities
25 OS Juniper Junos 18.1 R3-s1 * * Version Details Vulnerabilities
26 OS Juniper Junos 18.1 R2 * * Version Details Vulnerabilities
27 OS Juniper Junos 18.1 R3-s8 * * Version Details Vulnerabilities
28 OS Juniper Junos 18.1 R3-s2 * * Version Details Vulnerabilities
29 OS Juniper Junos 18.1 R2-s1 * * Version Details Vulnerabilities
30 OS Juniper Junos 18.1 R3-s9 * * Version Details Vulnerabilities
31 OS Juniper Junos 18.1 R3-s3 * * Version Details Vulnerabilities
32 OS Juniper Junos 18.1 R2-s2 * * Version Details Vulnerabilities
33 OS Juniper Junos 18.1 R3-s4 * * Version Details Vulnerabilities
34 OS Juniper Junos 18.1 R2-s4 * * Version Details Vulnerabilities
35 OS Juniper Junos 18.1 - * * Version Details Vulnerabilities
36 OS Juniper Junos 18.1 R3-s6 * * Version Details Vulnerabilities
37 OS Juniper Junos 18.1 R3 * * Version Details Vulnerabilities
38 OS Juniper Junos 18.2 R1 - * Version Details Vulnerabilities
39 OS Juniper Junos 18.2 R3 * * Version Details Vulnerabilities
40 OS Juniper Junos 18.2 R2-s2 * * Version Details Vulnerabilities
41 OS Juniper Junos 18.2 R1-s3 * * Version Details Vulnerabilities
42 OS Juniper Junos 18.2 R3-s1 * * Version Details Vulnerabilities
43 OS Juniper Junos 18.2 R2-s3 * * Version Details Vulnerabilities
44 OS Juniper Junos 18.2 R1-s4 * * Version Details Vulnerabilities
45 OS Juniper Junos 18.2 R3-s2 * * Version Details Vulnerabilities
46 OS Juniper Junos 18.2 R2-s4 * * Version Details Vulnerabilities
47 OS Juniper Junos 18.2 R1-s5 * * Version Details Vulnerabilities
48 OS Juniper Junos 18.2 R3-s3 * * Version Details Vulnerabilities
49 OS Juniper Junos 18.2 - * * Version Details Vulnerabilities
50 OS Juniper Junos 18.2 R2-s5 * * Version Details Vulnerabilities
51 OS Juniper Junos 18.2 R2 * * Version Details Vulnerabilities
52 OS Juniper Junos 18.2 R1 * * Version Details Vulnerabilities
53 OS Juniper Junos 18.2 R2-s6 * * Version Details Vulnerabilities
54 OS Juniper Junos 18.2 R2-s1 * * Version Details Vulnerabilities
55 OS Juniper Junos 18.3 R3 * * Version Details Vulnerabilities
56 OS Juniper Junos 18.3 R2 * * Version Details Vulnerabilities
57 OS Juniper Junos 18.3 R1-s1 * * Version Details Vulnerabilities
58 OS Juniper Junos 18.3 R3-s1 * * Version Details Vulnerabilities
59 OS Juniper Junos 18.3 R2-s1 * * Version Details Vulnerabilities
60 OS Juniper Junos 18.3 R1-s2 * * Version Details Vulnerabilities
61 OS Juniper Junos 18.3 R2-s2 * * Version Details Vulnerabilities
62 OS Juniper Junos 18.3 R1-s3 * * Version Details Vulnerabilities
63 OS Juniper Junos 18.3 R2-s3 * * Version Details Vulnerabilities
64 OS Juniper Junos 18.3 R1-s5 * * Version Details Vulnerabilities
65 OS Juniper Junos 18.3 - * * Version Details Vulnerabilities
66 OS Juniper Junos 18.3 R2-s4 * * Version Details Vulnerabilities
67 OS Juniper Junos 18.3 R1-s6 * * Version Details Vulnerabilities
68 OS Juniper Junos 18.3 R1 * * Version Details Vulnerabilities
69 OS Juniper Junos 18.4 R3-s1 * * Version Details Vulnerabilities
70 OS Juniper Junos 18.4 R2-s2 * * Version Details Vulnerabilities
71 OS Juniper Junos 18.4 R1-s5 * * Version Details Vulnerabilities
72 OS Juniper Junos 18.4 R2-s3 * * Version Details Vulnerabilities
73 OS Juniper Junos 18.4 R1-s6 * * Version Details Vulnerabilities
74 OS Juniper Junos 18.4 - * * Version Details Vulnerabilities
75 OS Juniper Junos 18.4 R2-s4 * * Version Details Vulnerabilities
76 OS Juniper Junos 18.4 R1-s7 * * Version Details Vulnerabilities
77 OS Juniper Junos 18.4 R1 * * Version Details Vulnerabilities
78 OS Juniper Junos 18.4 R1-s2 * * Version Details Vulnerabilities
79 OS Juniper Junos 18.4 R2-s5 * * Version Details Vulnerabilities
80 OS Juniper Junos 18.4 R2 * * Version Details Vulnerabilities
81 OS Juniper Junos 18.4 R1-s1 * * Version Details Vulnerabilities
82 OS Juniper Junos 18.4 R1-s3 * * Version Details Vulnerabilities
83 OS Juniper Junos 18.4 R3 * * Version Details Vulnerabilities
84 OS Juniper Junos 18.4 R2-s1 * * Version Details Vulnerabilities
85 OS Juniper Junos 18.4 R1-s4 * * Version Details Vulnerabilities
86 OS Juniper Junos 19.1 R1-s4 * * Version Details Vulnerabilities
87 OS Juniper Junos 19.1 - * * Version Details Vulnerabilities
88 OS Juniper Junos 19.1 R3 * * Version Details Vulnerabilities
89 OS Juniper Junos 19.1 R1 * * Version Details Vulnerabilities
90 OS Juniper Junos 19.1 R3-s1 * * Version Details Vulnerabilities
91 OS Juniper Junos 19.1 R1-s1 * * Version Details Vulnerabilities
92 OS Juniper Junos 19.1 R3-s2 * * Version Details Vulnerabilities
93 OS Juniper Junos 19.1 R1-s2 * * Version Details Vulnerabilities
94 OS Juniper Junos 19.1 R1-s3 * * Version Details Vulnerabilities
95 OS Juniper Junos 19.2 R1 * * Version Details Vulnerabilities
96 OS Juniper Junos 19.2 R1-s4 * * Version Details Vulnerabilities
97 OS Juniper Junos 19.2 R2 * * Version Details Vulnerabilities
98 OS Juniper Junos 19.2 R1-s1 * * Version Details Vulnerabilities
99 OS Juniper Junos 19.2 R1-s2 * * Version Details Vulnerabilities
100 OS Juniper Junos 19.2 R1-s3 * * Version Details Vulnerabilities
101 OS Juniper Junos 19.2 - * * Version Details Vulnerabilities
102 OS Juniper Junos 19.3 R2 * * Version Details Vulnerabilities
103 OS Juniper Junos 19.3 R2-s1 * * Version Details Vulnerabilities
104 OS Juniper Junos 19.3 R2-s2 * * Version Details Vulnerabilities
105 OS Juniper Junos 19.3 - * * Version Details Vulnerabilities
106 OS Juniper Junos 19.3 R2-s3 * * Version Details Vulnerabilities
107 OS Juniper Junos 19.3 R1 * * Version Details Vulnerabilities
108 OS Juniper Junos 19.3 R2-s4 * * Version Details Vulnerabilities
109 OS Juniper Junos 19.3 R1-s1 * * Version Details Vulnerabilities
110 OS Juniper Junos 19.4 R1-s1 * * Version Details Vulnerabilities
111 OS Juniper Junos 19.4 R1-s2 * * Version Details Vulnerabilities
112 OS Juniper Junos 19.4 R2 * * Version Details Vulnerabilities
113 OS Juniper Junos 19.4 R2-s1 * * Version Details Vulnerabilities
114 OS Juniper Junos 19.4 R3 * * Version Details Vulnerabilities
115 OS Juniper Junos 19.4 R1 * * Version Details Vulnerabilities
116 OS Juniper Junos 20.1 R1 * * Version Details Vulnerabilities
117 OS Juniper Junos 20.1 R1-s1 * * Version Details Vulnerabilities
118 OS Juniper Junos 20.1 R1-s2 * * Version Details Vulnerabilities
119 OS Juniper Junos 20.1 R1-s3 * * Version Details Vulnerabilities
120 OS Juniper Junos Os Evolved 19.3 R2 * * Version Details Vulnerabilities
121 OS Juniper Junos Os Evolved 19.3 R1 * * Version Details Vulnerabilities
122 OS Juniper Junos Os Evolved 19.4 R1 * * Version Details Vulnerabilities
123 OS Juniper Junos Os Evolved 19.4 R2 * * Version Details Vulnerabilities
124 OS Juniper Junos Os Evolved 19.4 R2-s1 * * Version Details Vulnerabilities
125 OS Juniper Junos Os Evolved 20.1 R1-s1 * * Version Details Vulnerabilities
126 OS Juniper Junos Os Evolved 20.1 - * * Version Details Vulnerabilities
127 OS Juniper Junos Os Evolved 20.1 R1 * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Juniper Junos 119
Juniper Junos Os Evolved 8

- References For CVE-2021-0208

https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/corouted-bidirectional-edit-protocols-mpls.html
https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/disable-edit-protocols-rsvp.html
https://kb.juniper.net/JSA11098 CONFIRM

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0

- Metasploit Modules Related To CVE-2021-0208

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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