Riskcovery

CVE-2025-21593

Junos OS and Junos OS Evolved: On SRv6 enabled devices, an attacker sending a malformed BGP update can cause the rpd to crash

State
Published
Severity
7.1 High
Published
Jan 9, 2025
Updated
Jan 9, 2025
Reserved
Dec 26, 2024

Read the record on cve.org

Description

An Improper Control of a Resource Through its Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a Denial-of-Service (DoS).

On devices with SRv6 (Segment Routing over IPv6) enabled, an attacker can send a malformed BGP UPDATE packet which will cause the rpd to crash and restart. Continued receipt of these UPDATE packets will cause a sustained DoS condition.

This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.This issue affects Junos OS:

* All versions before 21.2R3-S9,  * from 21.4 before 21.4R3-S10,  * from 22.2 before 22.2R3-S5,  * from 22.3 before 22.3R3-S4,  * from 22.4 before 22.4R3-S3,  * from 23.2 before 23.2R2-S2,  * from 23.4 before 23.4R2;

and Junos OS Evolved:

* All versions before 21.2R3-S9-EVO,  * from 21.4-EVO before 21.4R3-S10-EVO,  * from 22.2-EVO before 22.2R3-S5-EVO,  * from 22.3-EVO before 22.3R3-S4-EVO,  * from 22.4-EVO before 22.4R3-S3-EVO, * from 23.2-EVO before 23.2R2-S2-EVO,  * from 23.4-EVO before 23.4R2-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:N/R:Ajuniper
3.16.5 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hjuniper

Weaknesses

  • CWE-664 Improper Control of a Resource Through its Lifetime

Affected Products

ProductVersions
Junos OSJuniper Networks
  • before 21.2R3-S9Affected
  • 21.4 to before 21.4R3-S10Affected
  • 22.2 to before 22.2R3-S5Affected
  • 22.3 to before 22.3R3-S4Affected
  • 22.4 to before 22.4R3-S3Affected
  • 23.2 to before 23.2R2-S2Affected
  • 23.4 to before 23.4R2Affected
Junos OS EvolvedJuniper Networks
  • before 21.2R3-S9-EVOAffected
  • 21.4-EVO to before 21.4R3-S10-EVOAffected
  • 22.2-EVO to before 22.2R3-S5-EVOAffected
  • 22.3-EVO to before 22.3R3-S4-EVOAffected
  • 22.4-EVO to before 22.4R3-S3-EVOAffected
  • 23.2-EVO to before 23.2R2-S2-EVOAffected
  • 23.4-EVO to before 23.4R2-EVOAffected

References

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