6

CVE-2024-39536

A Missing Release of Memory after Effective Lifetime vulnerability in the Periodic Packet Management Daemon (ppmd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a 

Denial-of-Service (DoS).


When a BFD session configured with authentication flaps, ppmd memory can leak. Whether the leak happens depends on a race condition which is outside the attackers control. This issue only affects BFD operating in distributed aka delegated (which is the default behavior) or inline mode.



Whether the leak occurs can be monitored with the following CLI command:

> show ppm request-queue


FPC     Pending-request
fpc0                   2
request-total-pending: 2


where a continuously increasing number of pending requests is indicative of the leak. 








This issue affects:

Junos OS:


  *  All versions before 21.2R3-S8,
  *  21.4 versions before 21.4R3-S7,
  *  22.1 versions before 22.1R3-S4,
  *  22.2 versions before 22.2R3-S4, 
  *  22.3 versions before 22.3R3,
  *  22.4 versions before 22.4R2-S2, 22.4R3.



Junos OS Evolved:
  *  All versions before 21.2R3-S8-EVO,
  *  21.4-EVO versions before 21.4R3-S7-EVO,
  *  22.2-EVO versions before 22.2R3-S4-EVO,
  *  22.3-EVO versions before 22.3R3-EVO,
  *  22.4-EVO versions before 22.4R3-EVO.

Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
Diese Information steht angemeldeten Benutzern zur Verfügung.
Daten sind bereitgestellt durch das CVE Programm von Authorized Data Publishers (ADP) (Unstrukturiert)
Herstellerjuniper
≫
Produkt junos_os
Default Statusunaffected
Version < 21.2R3-S8
Version 0
Status affected
Version < 21.4R3-S7
Version 21.4
Status affected
Version < 22.1R3-S4
Version 22.1
Status affected
Version < 22.2R3-S4
Version 22.2
Status affected
Version < 22.3R3
Version 22.3
Status affected
Version < 22.4R2-S2
Version 22.4
Status affected
Version < 22.4R3
Version 22.4
Status affected
Herstellerjuniper
≫
Produkt junos_os_evolved
Default Statusunaffected
Version < 21.2R3-S8-EVO
Version 21.2-EVO
Status affected
Version < 21.4R3-S7-EVO
Version 21.4-EVO
Status affected
Version < 22.2R3-S4-EVO
Version 22.2-EVO
Status affected
Version < 22.3R3-EVO
Version 22.3-EVO
Status affected
Version < 22.4R3-EVO
Version 22.4-EVO
Status affected
Version < 23.2R1-EVO
Version 23.2-EVO
Status affected
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.06% 0.183
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
sirt@juniper.net 6 0 0
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
sirt@juniper.net 5.3 1.6 3.6
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.