Skip to main content

Junos CVE-2024-21618

HIGH
Access of Memory Location After End of Buffer (CWE-788)
2024-04-12 sirt@juniper.net
Juniper Denial Of Service Junos Junos Os Evolved
7.1
CVSS 4.0 · Vendor: juniper
Share

Severity by source

Vendor (juniper) PRIMARY
7.1 HIGH
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from Vendor (juniper) · only source for this CVE.

CVSS VectorVendor: juniper

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

1
CVE Published
Apr 12, 2024 - 15:15 cve.org
HIGH 7.1

DescriptionCVE.org

An Access of Memory Location After End of Buffer vulnerability in the Layer-2 Control Protocols Daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause Denial of Service (DoS).

On all Junos OS and Junos OS Evolved platforms, when LLDP is enabled on a specific interface, and a malformed LLDP packet is received, l2cpd crashes and restarts. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, MSTP or VSTP), and MVRP and ERP. Also, if any services depend on LLDP state (like PoE or VoIP device recognition), then these will also be affected.

This issue affects:

Junos OS:

  • from 21.4 before 21.4R3-S4,
  • from 22.1 before 22.1R3-S4,
  • from 22.2 before 22.2R3-S2,
  • from 22.3 before 22.3R2-S2, 22.3R3-S1,
  • from 22.4 before 22.4R3,
  • from 23.2 before 23.2R2.

Junos OS Evolved:

  • from 21.4-EVO before 21.4R3-S5-EVO,
  • from 22.1-EVO before 22.1R3-S4-EVO,
  • from 22.2-EVO before 22.2R3-S2-EVO,
  • from 22.3-EVO before 22.3R2-S2-EVO, 22.3R3-S1-EVO,
  • from 22.4-EVO before 22.4R3-EVO,
  • from 23.2-EVO before 23.2R2-EVO.

This issue does not affect:

  • Junos OS versions prior to 21.4R1;
  • Junos OS Evolved versions prior to 21.4R1-EVO.

AnalysisAI

An Access of Memory Location After End of Buffer vulnerability in the Layer-2 Control Protocols Daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated. Rated high severity (CVSS 7.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-788. An Access of Memory Location After End of Buffer vulnerability in the Layer-2 Control Protocols Daemon (l2cpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause Denial of Service (DoS). On all Junos OS and Junos OS Evolved platforms, when LLDP is enabled on a specific interface, and a malformed LLDP packet is received, l2cpd crashes and restarts. The impact of the l2cpd crash is reinitialization of STP protocols (RSTP, MSTP or VSTP), and MVRP and ERP. Also, if any services depend on LLDP state (like PoE or VoIP device recognition), then these will also be affected. This issue affects: Junos OS: * from 21.4 before 21.4R3-S4, * from 22.1 before 22.1R3-S4, * from 22.2 before 22.2R3-S2, * from 22.3 before 22.3R2-S2, 22.3R3-S1, * from 22.4 before 22.4R3, * from 23.2 before 23.2R2. Junos OS Evolved: * from 21.4-EVO before 21.4R3-S5-EVO, * from 22.1-EVO before 22.1R3-S4-EVO, * from 22.2-EVO before 22.2R3-S2-EVO, * from 22.3-EVO before 22.3R2-S2-EVO, 22.3R3-S1-EVO, * from 22.4-EVO before 22.4R3-EVO, * from 23.2-EVO before 23.2R2-EVO. This issue does not affect: * Junos OS versions prior to 21.4R1; * Junos OS Evolved versions prior to 21.4R1-EVO. Affected products include: Juniper Junos, Juniper Junos Os Evolved. Version information: before 21.4.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

More in Junos

View all
CVE-2016-1285 MEDIUM
6.8 Mar 09

named in ISC BIND 9.x before 9.9.8-P4 and 9.10.x before 9.10.3-P4 does not properly handle DNAME records when parsing fe
CVE-2016-1286 HIGH
8.6 Mar 09

named in ISC BIND 9.x before 9.9.8-P4 and 9.10.x before 9.10.3-P4 allows remote attackers to cause a denial of service (
CVE-2023-36845 CRITICAL POC
9.8 Aug 17

A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series and SRX Series all
CVE-2013-6618 CRITICAL POC
9.0 Nov 05

jsdm/ajax/port.php in J-Web in Juniper Junos before 10.4R13, 11.4 before 11.4R7, 12.1 before 12.1R5, 12.2 before 12.2R3,
CVE-2014-6380 HIGH POC
7.8 Oct 14

Juniper Junos 11.4 before R11, 12.1 before R9, 12.1X44 before D30, 12.1X45 before D20, 12.1X46 before D15, 12.1X47 befor
CVE-2021-0253 HIGH POC
7.8 Apr 22

NFX Series devices using Juniper Networks Junos OS are susceptible to a local command execution vulnerability thereby al
CVE-2021-0252 HIGH POC
7.8 Apr 22

NFX Series devices using Juniper Networks Junos OS are susceptible to a local code execution vulnerability thereby allow
CVE-2019-0053 HIGH POC
7.8 Jul 11

Insufficient validation of environment variables in the telnet client supplied in Junos OS can lead to stack-based buffe
CVE-2023-22415 HIGH POC
7.5 Jan 13

An Out-of-Bounds Write vulnerability in the H.323 ALG of Juniper Networks Junos OS allows an unauthenticated, network-ba
CVE-2022-22223 HIGH POC
7.5 Oct 18

On QFX10000 Series devices using Juniper Networks Junos OS when configured as transit IP/MPLS penultimate hop popping (P
CVE-2022-22209 HIGH POC
7.5 Jul 20

A Missing Release of Memory after Effective Lifetime vulnerability in the kernel of Juniper Networks Junos OS allows an

CVE-2022-22188 HIGH POC
7.5 Apr 14

An Uncontrolled Memory Allocation vulnerability leading to a Heap-based Buffer Overflow in the packet forwarding engine

Same weakness CWE-788 – Access of Memory Location After End of Buffer

View all
CVE-2021-32629 HIGH POC
8.8
CVE-2022-1451 HIGH POC
7.1
CVE-2021-27384 CRITICAL
9.8
CVE-2019-8280 CRITICAL
9.8
CVE-2019-8266 CRITICAL
9.8
CVE-2019-8265 CRITICAL
9.8
CVE-2019-8264 CRITICAL
9.8
CVE-2021-21105 HIGH
8.8

Same technique Denial Of Service

View all
CVE-2015-5119 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2011-0609 HIGH POC
7.8

Share

CVE-2024-21618 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy