CVE-2021-0205

When the "Intrusion Detection Service" (IDS) feature is configured on Juniper Networks MX series with a dynamic firewall filter using IPv6 source or destination prefix, it may incorrectly match the prefix as /32, causing the filter to block unexpected traffic. This issue affects only IPv6 prefixes when used as source and destination. This issue affects MX Series devices using MS-MPC, MS-MIC or MS-SPC3 service cards with IDS service configured. This issue affects: Juniper Networks Junos OS 17.3 versions prior to 17.3R3-S10 on MX Series; 17.4 versions prior to 17.4R3-S3 on MX Series; 18.1 versions prior to 18.1R3-S11 on MX Series; 18.2 versions prior to 18.2R3-S6 on MX Series; 18.3 versions prior to 18.3R3-S4 on MX Series; 18.4 versions prior to 18.4R3-S6 on MX Series; 19.1 versions prior to 19.1R2-S2, 19.1R3-S3 on MX Series; 19.2 versions prior to 19.2R3-S1 on MX Series; 19.3 versions prior to 19.3R2-S5, 19.3R3-S1 on MX Series; 19.4 versions prior to 19.4R3 on MX Series; 20.1 versions prior to 20.1R2 on MX Series; 20.2 versions prior to 20.2R2 on MX Series;
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.8 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
juniperCNA
5.8 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 45%
VendorProductVersion
juniperjunos
17.3
juniperjunos
17.3:r1-s1
juniperjunos
17.3:r2
juniperjunos
17.3:r2-s1
juniperjunos
17.3:r2-s2
juniperjunos
17.3:r2-s3
juniperjunos
17.3:r2-s4
juniperjunos
17.3:r2-s5
juniperjunos
17.3:r3
juniperjunos
17.3:r3-s1
juniperjunos
17.3:r3-s2
juniperjunos
17.3:r3-s3
juniperjunos
17.3:r3-s4
juniperjunos
17.3:r3-s7
juniperjunos
17.3:r3-s8
juniperjunos
17.3:r3-s9
juniperjunos
17.4
juniperjunos
17.4:r1
juniperjunos
17.4:r1-s1
juniperjunos
17.4:r1-s2
juniperjunos
17.4:r1-s4
juniperjunos
17.4:r1-s5
juniperjunos
17.4:r1-s6
juniperjunos
17.4:r1-s7
juniperjunos
17.4:r2
juniperjunos
17.4:r2-s1
juniperjunos
17.4:r2-s10
juniperjunos
17.4:r2-s11
juniperjunos
17.4:r2-s2
juniperjunos
17.4:r2-s3
juniperjunos
17.4:r2-s4
juniperjunos
17.4:r2-s5
juniperjunos
17.4:r2-s6
juniperjunos
17.4:r2-s7
juniperjunos
17.4:r2-s8
juniperjunos
17.4:r2-s9
juniperjunos
17.4:r3
juniperjunos
17.4:r3-s1
juniperjunos
17.4:r3-s2
juniperjunos
18.1
juniperjunos
18.1:r1
juniperjunos
18.1:r2
juniperjunos
18.1:r2-s1
juniperjunos
18.1:r2-s2
juniperjunos
18.1:r2-s4
juniperjunos
18.1:r3
juniperjunos
18.1:r3-s1
juniperjunos
18.1:r3-s10
juniperjunos
18.1:r3-s2
juniperjunos
18.1:r3-s3
juniperjunos
18.1:r3-s4
juniperjunos
18.1:r3-s6
juniperjunos
18.1:r3-s7
juniperjunos
18.1:r3-s8
juniperjunos
18.1:r3-s9
juniperjunos
18.2
juniperjunos
18.2:r1
juniperjunos
18.2:r1-s3
juniperjunos
18.2:r1-s4
juniperjunos
18.2:r1-s5
juniperjunos
18.2:r2
juniperjunos
18.2:r2-s1
juniperjunos
18.2:r2-s2
juniperjunos
18.2:r2-s3
juniperjunos
18.2:r2-s4
juniperjunos
18.2:r2-s5
juniperjunos
18.2:r2-s6
juniperjunos
18.2:r3
juniperjunos
18.2:r3-s1
juniperjunos
18.2:r3-s2
juniperjunos
18.2:r3-s3
juniperjunos
18.2:r3-s4
juniperjunos
18.2:r3-s5
juniperjunos
18.3
juniperjunos
18.3:r1
juniperjunos
18.3:r1-s1
juniperjunos
18.3:r1-s2
juniperjunos
18.3:r1-s3
juniperjunos
18.3:r1-s5
juniperjunos
18.3:r1-s6
juniperjunos
18.3:r2
juniperjunos
18.3:r2-s1
juniperjunos
18.3:r2-s2
juniperjunos
18.3:r2-s3
juniperjunos
18.3:r2-s4
juniperjunos
18.3:r3
juniperjunos
18.3:r3-s1
juniperjunos
18.3:r3-s2
juniperjunos
18.3:r3-s3
juniperjunos
18.4
juniperjunos
18.4:r1
juniperjunos
18.4:r1-s1
juniperjunos
18.4:r1-s2
juniperjunos
18.4:r1-s5
juniperjunos
18.4:r1-s6
juniperjunos
18.4:r2
juniperjunos
18.4:r2-s1
juniperjunos
18.4:r2-s2
juniperjunos
18.4:r2-s3
juniperjunos
18.4:r2-s4
juniperjunos
18.4:r3
juniperjunos
18.4:r3-s1
juniperjunos
18.4:r3-s2
juniperjunos
18.4:r3-s3
juniperjunos
18.4:r3-s4
juniperjunos
18.4:r3-s5
juniperjunos
19.1
juniperjunos
19.1:r1
juniperjunos
19.1:r1-s1
juniperjunos
19.1:r1-s2
juniperjunos
19.1:r1-s3
juniperjunos
19.1:r1-s4
juniperjunos
19.1:r2
juniperjunos
19.1:r2-s1
juniperjunos
19.1:r3
juniperjunos
19.1:r3-s1
juniperjunos
19.1:r3-s2
juniperjunos
19.2
juniperjunos
19.2:r1
juniperjunos
19.2:r1-s1
juniperjunos
19.2:r1-s2
juniperjunos
19.2:r1-s3
juniperjunos
19.2:r1-s4
juniperjunos
19.2:r2
juniperjunos
19.2:r3
juniperjunos
19.3
juniperjunos
19.3:r1
juniperjunos
19.3:r1-s1
juniperjunos
19.3:r2
juniperjunos
19.3:r2-s1
juniperjunos
19.3:r2-s2
juniperjunos
19.3:r2-s3
juniperjunos
19.3:r2-s4
juniperjunos
19.3:r3
juniperjunos
19.4:r1
juniperjunos
19.4:r1-s1
juniperjunos
19.4:r1-s2
juniperjunos
19.4:r2
juniperjunos
19.4:r2-s1
juniperjunos
20.1:r1
juniperjunos
20.1:r1-s1
juniperjunos
20.1:r1-s2
juniperjunos
20.1:r1-s3
juniperjunos
20.2:r1
𝑥
= Vulnerable software versions