Lucene search

JuniperCVELIST:CVE-2023-44195

HistoryOct 12, 2023 - 11:04 p.m.

CVE-2023-44195 Junos OS Evolved: Packets which are not destined to the router can reach the RE

2023-10-1223:04:32

CWE-923

juniper

www.cve.org

cve-2023-44195

juniper networks

networkstack agent daemon

unauthorized access

denial-of-service

firewall filters

resource consumption

21.3-evo

21.4-evo

21.3r3-s5-evo

21.4r3-s4-evo

22.1-evo

22.2-evo

22.1r1-evo

22.2r1-evo

22.3-evo

22.3r2-s2-evo

22.3r3-s1-evo

22.4-evo

22.4r3-evo

5.4 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

6.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.7%

JSON

An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the NetworkStack agent daemon (nsagentd) of Juniper Networks Junos OS Evolved allows an unauthenticated network based attacker to cause limited impact to the availability of the system.

If specific packets reach the Routing-Engine (RE) these will be processed normally even if firewall filters are in place which should have prevented this. This can lead to a limited, increased consumption of resources resulting in a Denial-of-Service (DoS), and unauthorized access.

CVE-2023-44196 is a prerequisite for this issue.

This issue affects Juniper Networks Junos OS Evolved:

21.3-EVO versions prior to 21.3R3-S5-EVO;
21.4-EVO versions prior to 21.4R3-S4-EVO;
22.1-EVO version 22.1R1-EVO and later;
22.2-EVO version 22.2R1-EVO and later;
22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;
22.4-EVO versions prior to 22.4R3-EVO.

This issue doesn’t not affected Junos OS Evolved versions prior to 21.3R1-EVO.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "21.3R1-EVO",
        "status": "unaffected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "21.3R3-S5-EVO",
        "status": "affected",
        "version": "21.3-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "21.4R3-S4-EVO",
        "status": "affected",
        "version": "21.4-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "22.1*-EVO",
        "status": "affected",
        "version": "22.1R1-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "22.2*-EVO",
        "status": "affected",
        "version": "22.2R1-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "22.3R2-S2-EVO, 22.3R3-S1-EVO",
        "status": "affected",
        "version": "22.3-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "22.4R3-EVO",
        "status": "affected",
        "version": "22.4-EVO",
        "versionType": "semver"
      }
    ]
  }
]

References

supportportal.juniper.net/JSA73160

5.4 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

6.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.7%

JSON

Related for CVELIST:CVE-2023-44195