Riskcovery

CVE-2024-30386

Junos OS and Junos OS Evolved: In a EVPN-VXLAN scenario state changes on adjacent systems can cause an l2ald process crash

State
Published
Severity
7.1 High
Published
Apr 12, 2024
Updated
Aug 2, 2024
Reserved
Mar 26, 2024

Read the record on cve.org

Description

A Use-After-Free vulnerability in the Layer 2 Address Learning Daemon (l2ald)

of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause l2ald to crash leading to a Denial-of-Service (DoS).

In an EVPN-VXLAN scenario, when

state updates are received and processed by the affected system, the correct order of some processing steps is not ensured, which can lead to an l2ald crash and restart. Whether the crash occurs depends on system internal timing which is outside the attackers control. This issue affects:

Junos OS:

* All versions before 20.4R3-S8, * 21.2 versions before 21.2R3-S6, * 21.3 versions before 21.3R3-S5, * 21.4 versions before 21.4R3-S4, * 22.1 versions before 22.1R3-S3, * 22.2 versions before 22.2R3-S1, * 22.3 versions before 22.3R3,, * 22.4 versions before 22.4R2;

Junos OS Evolved:

* All versions before 20.4R3-S8-EVO, * 21.2-EVO versions before 21.2R3-S6-EVO,  * 21.3-EVO

versions before 21.3R3-S5-EVO, * 21.4-EVO

versions before 21.4R3-S4-EVO, * 22.1-EVO

versions before 22.1R3-S3-EVO, * 22.2-EVO

versions before 22.2R3-S1-EVO, * 22.3-EVO

versions before 22.3R3-EVO, * 22.4-EVO

versions before 22.4R2-EVO.

Scores

CVSSScoreVectorSource
4.07.1 HighCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Ljuniper
3.15.3 MediumCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hjuniper

Weaknesses

Affected Products

ProductVersions
Junos OSJuniper Networks
  • before 20.4R3-S8Affected
  • 21.2 to before 21.2R3-S6Affected
  • 21.3 to before 21.3R3-S5Affected
  • 21.4 to before 21.4R3-S4Affected
  • 22.1 to before 22.1R3-S3Affected
  • 22.2 to before 22.2R3-S1Affected
  • 22.3 to before 22.3R3Affected
  • 22.4 to before 22.4R2Affected
Junos OS EvolvedJuniper Networks
  • before 20.4R3-S8-EVOAffected
  • 21.2-EVO to before 21.2R3-S6-EVOAffected
  • 21.3-EVO to before 21.3R3-S5-EVOAffected
  • 21.4-EVO to before 21.4R3-S4-EVOAffected
  • 22.1-EVO to before 22.1R3-S3-EVOAffected
  • 22.2-EVO to before 22.2R3-S1-EVOAffected
  • 22.3-EVO to before 22.3R3-EVOAffected
  • 22.4-EVO to before 22.4R2-EVOAffected

References

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