CVE Vulnerabilities

CVE-2024-21613

Missing Release of Memory after Effective Lifetime

Published: Jan 12, 2024 | Modified: Jan 19, 2024
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

A Missing Release of Memory after Effective Lifetime vulnerability in Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause an rpd crash, leading to Denial of Service (DoS).

On all Junos OS and Junos OS Evolved platforms, when traffic engineering is enabled for OSPF or ISIS, and a link flaps, a patroot memory leak is observed. This memory leak, over time, will lead to an rpd crash and restart.

The memory usage can be monitored using the below command.

user@host> show task memory detail | match patroot This issue affects:

Juniper Networks Junos OS

  • All versions earlier than 21.2R3-S3;
  • 21.3 versions earlier than 21.3R3-S5;
  • 21.4 versions earlier than 21.4R3-S3;
  • 22.1 versions earlier than 22.1R3;
  • 22.2 versions earlier than 22.2R3.

Juniper Networks Junos OS Evolved

  • All versions earlier than 21.3R3-S5-EVO;
  • 21.4 versions earlier than 21.4R3-EVO;
  • 22.1 versions earlier than 22.1R3-EVO;
  • 22.2 versions earlier than 22.2R3-EVO.

Weakness

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

Affected Software

Name Vendor Start Version End Version
Junos Juniper 21.2 21.2
Junos Juniper 21.2 21.2
Junos Juniper 21.2 21.2
Junos Juniper 21.2 21.2
Junos Juniper 21.2 21.2
Junos Juniper 21.2 21.2
Junos Juniper 21.2 21.2
Junos Juniper 21.2 21.2
Junos Juniper 21.2 21.2
Junos Juniper 21.2 21.2

Potential Mitigations

  • Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
  • For example, glibc in Linux provides protection against free of invalid pointers.
  • When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
  • To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.

References