Junos OS and Junos OS Evolved: With certain BGP options enabled, receipt of specifically malformed BGP update causes RPD crash

Summary

An Out-of-Bounds Read vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects systems configured in either of two ways: • systems with BGP traceoptions enabled • systems with BGP traffic engineering configured This issue can affect iBGP and eBGP with any address family configured. The specific attribute involved is non-transitive, and will not propagate across a network. This issue affects: Junos OS:  • All versions before 21.4R3-S8, • 22.2 before 22.2R3-S5,  • 22.3 before 22.3R3-S4,  • 22.4 before 22.4R3-S3,  • 23.2 before 23.2R2-S2,  • 23.4 before 23.4R2;  Junos OS Evolved:  • All versions before 21.4R3-S8-EVO,  • 22.2-EVO before 22.2R3-S5-EVO,  • 22.3-EVO before 22.3R3-S4-EVO,  • 22.4-EVO before 22.4R3-S3-EVO,  • 23.2-EVO before 23.2R2-S2-EVO,  • 23.4-EVO before 23.4R2-EVO.

Timeline

1. Oct 9, 2024, 8:00 PM UTCCVE published
2. Oct 9, 2024, 8:56 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: yes · Technical impact: partial

3. Oct 16, 2024, 9:11 PM UTCRecord last updated

Affected versions

• Juniper Networks Junos OS

  fixed in 21.4R3-S8; From 22.2 · fixed in 22.2R3-S5; From 22.3 · fixed in 22.3R3-S4; From 22.4 · fixed in 22.4R3-S3; From 23.2 · fixed in 23.2R2-S2; From 23.4 · fixed in 23.4R2

• Juniper Networks Junos OS Evolved

  fixed in 21.4R3-S8-EVO; From 22.2-EVO · fixed in 22.2R3-S5-EVO; From 22.3-EVO · fixed in 22.3R3-S4-EVO; From 22.4-EVO · fixed in 22.4R3-S3-EVO; From 23.2-EVO · fixed in 23.2R2-S2-EVO; From 23.4-EVO · fixed in 23.4R2-EVO

References 2