CVE-2024-39551

An Uncontrolled Resource Consumption vulnerability in the H.323 ALG (Application Layer Gateway) of Juniper Networks Junos OS on SRX Series and MX Series with SPC3 and MS-MPC/MIC, allows anunauthenticated network-based attacker to send specific packets causing traffic loss leading to Denial of Service (DoS).

Continued receipt and processing of these specific packets will sustain the Denial of Service condition.

The memory usage can be monitored using the below command.

user@host> show usp memory segment sha data objcache jsf
This issue affects SRX Series and MX Series with SPC3 and MS-MPC/MIC:

  *  20.4 before 20.4R3-S10,
  *  21.2 before 21.2R3-S6,
  *  21.3 before 21.3R3-S5,
  *  21.4 before 21.4R3-S6,
  *  22.1 before 22.1R3-S4,
  *  22.2 before 22.2R3-S2,
  *  22.3 before 22.3R3-S1,
  *  22.4 before 22.4R3,
  *  23.2 before 23.2R2.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
juniperCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA-ADPADP
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 47%
VendorProductVersion
juniperjunos_os
20.4r3-s10 <
𝑥
< 20.4r3-s10
juniperjunos_os
21.2r3-s6 <
𝑥
< 21.2r3-s6
juniperjunos_os
21.3r3-s5 <
𝑥
< 21.3r3-s5
juniperjunos_os
21.4r3-s6 <
𝑥
< 21.4r3-s6
juniperjunos_os
22.1r3-s4 <
𝑥
< 22.1r3-s4
juniperjunos_os
22.2r3-s2 <
𝑥
< 22.2r3-s2
juniperjunos_os
22.3r3-s1 <
𝑥
< 22.3r3-s1
juniperjunos_os
22.4r3 <
𝑥
< 22.4r3
juniperjunos_os
23.2r2 <
𝑥
< 23.2r2
𝑥
= Vulnerable software versions