// For flags

CVE-2020-1678

Junos OS and Junos OS Evolved: RPD can crash due to a slow memory leak.

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

On Juniper Networks Junos OS and Junos OS Evolved platforms with EVPN configured, receipt of specific BGP packets causes a slow memory leak. If the memory is exhausted the rpd process might crash. If the issue occurs, the memory leak could be seen by executing the "show task memory detail | match policy | match evpn" command multiple times to check if memory (Alloc Blocks value) is increasing. root@device> show task memory detail | match policy | match evpn ------------------------ Allocator Memory Report ------------------------ Name | Size | Alloc DTXP Size | Alloc Blocks | Alloc Bytes | MaxAlloc Blocks | MaxAlloc Bytes Policy EVPN Params 20 24 3330678 79936272 3330678 79936272 root@device> show task memory detail | match policy | match evpn ------------------------ Allocator Memory Report ------------------------ Name | Size | Alloc DTXP Size | Alloc Blocks | Alloc Bytes | MaxAlloc Blocks | MaxAlloc Bytes Policy EVPN Params 20 24 36620255 878886120 36620255 878886120 This issue affects: Juniper Networks Junos OS 19.4 versions prior to 19.4R2; 20.1 versions prior to 20.1R1-S4, 20.1R2; Juniper Networks Junos OS Evolved: 19.4 versions; 20.1 versions prior to 20.1R1-S4-EVO, 20.1R2-EVO; 20.2 versions prior to 20.2R1-EVO; This issue does not affect: Juniper Networks Junos OS releases prior to 19.4R1. Juniper Networks Junos OS Evolved releases prior to 19.4R1-EVO.

En las plataformas Juniper Networks Junos OS y Junos OS Evolved con EVPN configurado, la recepción de paquetes BGP específicos causa un filtrado de la memoria lento. Si se agota la memoria, el proceso rpd podría bloquearse. Si ocurre el problema, el filtrado de la memoria puede ser visualizado ejecutando el comando "show task memory detail | match policy | match evpn" varias veces para comprobar si la memoria (valor de Alloc Blocks) está aumentando. root@device) show task memory detail | match policy | match evpn ------------------------ Allocator Memory Report ------------------------ Name | Size | Alloc DTXP Size | Alloc Blocks | Alloc Bytes | MaxAlloc Blocks | MaxAlloc Bytes Policy EVPN Params 20 24 3330678 79936272 3330678 79936272 root@device> show task memory detail | match policy | match evpn ------------------------ Allocator Memory Report ------------------------ Name | Size | Alloc DTXP Size | Alloc Blocks | Alloc Bytes | MaxAlloc Blocks | MaxAlloc Bytes Policy EVPN Params 20 24 36620255 878886120 36620255 878886120. Este problema afecta a: Juniper Networks Junos OS versiones 19.4 anteriores a 19.4R2; versiones 20.1 anteriores a 20.1R1-S4, 20.1R2; Juniper Networks Junos OS Evolved: versiones 19.4; versiones 20.1 anteriores a 20.1R1-S4-EVO, 20.1R2-EVO; versiones 20.2 anteriores a 20.2R1-EVO; Este problema no afecta: Juniper Networks Junos OS versiones anteriores a 19.4R1. Juniper Networks Junos OS Evolved versiones anteriores a 19.4R1-EVO

*Credits: N/A
CVSS Scores
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Adjacent
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-11-04 CVE Reserved
  • 2020-10-16 CVE Published
  • 2023-07-02 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
  • CWE-401: Missing Release of Memory after Effective Lifetime
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://kb.juniper.net/JSA11075 2021-10-25
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Juniper
Search vendor "Juniper"
Junos
Search vendor "Juniper" for product "Junos"
19.4
Search vendor "Juniper" for product "Junos" and version "19.4"
r1
Affected
Juniper
Search vendor "Juniper"
Junos
Search vendor "Juniper" for product "Junos"
19.4
Search vendor "Juniper" for product "Junos" and version "19.4"
r1-s1
Affected
Juniper
Search vendor "Juniper"
Junos
Search vendor "Juniper" for product "Junos"
19.4
Search vendor "Juniper" for product "Junos" and version "19.4"
r1-s2
Affected
Juniper
Search vendor "Juniper"
Junos
Search vendor "Juniper" for product "Junos"
20.1
Search vendor "Juniper" for product "Junos" and version "20.1"
r1
Affected
Juniper
Search vendor "Juniper"
Junos
Search vendor "Juniper" for product "Junos"
20.1
Search vendor "Juniper" for product "Junos" and version "20.1"
r1-s1
Affected
Juniper
Search vendor "Juniper"
Junos
Search vendor "Juniper" for product "Junos"
20.1
Search vendor "Juniper" for product "Junos" and version "20.1"
r1-s2
Affected
Juniper
Search vendor "Juniper"
Junos
Search vendor "Juniper" for product "Junos"
20.1
Search vendor "Juniper" for product "Junos" and version "20.1"
r1-s3
Affected
Juniper
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Junos Os Evolved
Search vendor "Juniper" for product "Junos Os Evolved"
19.4
Search vendor "Juniper" for product "Junos Os Evolved" and version "19.4"
r1
Affected
Juniper
Search vendor "Juniper"
Junos Os Evolved
Search vendor "Juniper" for product "Junos Os Evolved"
19.4
Search vendor "Juniper" for product "Junos Os Evolved" and version "19.4"
r2
Affected
Juniper
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Junos Os Evolved
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19.4
Search vendor "Juniper" for product "Junos Os Evolved" and version "19.4"
r2-s1
Affected
Juniper
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Junos Os Evolved
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20.1
Search vendor "Juniper" for product "Junos Os Evolved" and version "20.1"
-
Affected
Juniper
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Junos Os Evolved
Search vendor "Juniper" for product "Junos Os Evolved"
20.1
Search vendor "Juniper" for product "Junos Os Evolved" and version "20.1"
r1
Affected
Juniper
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Junos Os Evolved
Search vendor "Juniper" for product "Junos Os Evolved"
20.2
Search vendor "Juniper" for product "Junos Os Evolved" and version "20.2"
-
Affected