CVE Vulnerabilities

CVE-2023-22395

Missing Release of Memory after Effective Lifetime

Published: Jan 13, 2023 | Modified: Jan 24, 2023
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

A Missing Release of Memory after Effective Lifetime vulnerability in the kernel of Juniper Networks Junos OS allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). In an MPLS scenario specific packets destined to an Integrated Routing and Bridging (irb) interface of the device will cause a buffer (mbuf) to leak. Continued receipt of these specific packets will eventually cause a loss of connectivity to and from the device, and requires a reboot to recover. These mbufs can be monitored by using the CLI command show system buffers: user@host> show system buffers 783/1497/2280 mbufs in use (current/cache/total) user@host> show system buffers 793/1487/2280 mbufs in use (current/cache/total) ««« mbuf usage increased This issue affects Juniper Networks Junos OS: All versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R3-S9; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S3; 21.2 versions prior to 21.2R3-S2; 21.3 versions prior to 21.3R3-S1; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2.

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 * *
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.3 19.3
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 19.4 19.4
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.1 20.1
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.2 20.2
Junos Juniper 20.3 20.3
Junos Juniper 20.3 20.3
Junos Juniper 20.3 20.3
Junos Juniper 20.3 20.3
Junos Juniper 20.3 20.3
Junos Juniper 20.3 20.3
Junos Juniper 20.3 20.3
Junos Juniper 20.3 20.3
Junos Juniper 20.3 20.3
Junos Juniper 20.3 20.3
Junos Juniper 20.3 20.3
Junos Juniper 20.4 20.4
Junos Juniper 20.4 20.4
Junos Juniper 20.4 20.4
Junos Juniper 20.4 20.4
Junos Juniper 20.4 20.4
Junos Juniper 20.4 20.4
Junos Juniper 20.4 20.4
Junos Juniper 20.4 20.4
Junos Juniper 20.4 20.4
Junos Juniper 20.4 20.4
Junos Juniper 21.1 21.1
Junos Juniper 21.1 21.1
Junos Juniper 21.1 21.1
Junos Juniper 21.1 21.1
Junos Juniper 21.1 21.1
Junos Juniper 21.1 21.1
Junos Juniper 21.1 21.1
Junos Juniper 21.1 21.1
Junos Juniper 21.1 21.1
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 21.3 21.3
Junos Juniper 21.3 21.3
Junos Juniper 21.3 21.3
Junos Juniper 21.3 21.3
Junos Juniper 21.3 21.3
Junos Juniper 21.3 21.3
Junos Juniper 21.3 21.3
Junos Juniper 21.3 21.3
Junos Juniper 21.4 21.4
Junos Juniper 21.4 21.4
Junos Juniper 21.4 21.4
Junos Juniper 21.4 21.4
Junos Juniper 21.4 21.4
Junos Juniper 21.4 21.4
Junos Juniper 22.1 22.1
Junos Juniper 22.1 22.1

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