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JuniperCVELIST:CVE-2024-30386

HistoryApr 12, 2024 - 3:23 p.m.

CVE-2024-30386 Junos OS and Junos OS Evolved: In a EVPN-VXLAN scenario state changes on adjacent systems can cause an l2ald process crash

2024-04-1215:23:24

CWE-416

juniper

www.cve.org

cve-2024-30386

junos os

junos os evolved

use-after-free

l2ald

dos

evpn-vxlan

unauthenticated

denial-of-service

5.3 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.1 High

CVSS4

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/SC:N/VI:N/SI:N/VA:H/SA:L

5.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.9%

JSON

A Use-After-Free vulnerability in the Layer 2 Address Learning Daemon (l2ald)

of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause l2ald to crash leading to a Denial-of-Service (DoS).

In an EVPN-VXLAN scenario, when

state updates are received and processed by the affected system, the correct order of some processing steps is not ensured, which can lead to an l2ald crash and restart. Whether the crash occurs depends on system internal timing which is outside the attackers control.
This issue affects:

Junos OS:

All versions before 20.4R3-S8,
21.2 versions before 21.2R3-S6,
21.3 versions before 21.3R3-S5,
21.4 versions before 21.4R3-S4,
22.1 versions before 22.1R3-S3,
22.2 versions before 22.2R3-S1,
22.3 versions before 22.3R3,
22.4 versions before 22.4R2;

Junos OS Evolved:

All versions before 20.4R3-S8-EVO,
21.2-EVO versions before 21.2R3-S6-EVO,
21.3-EVO

versions before 21.3R3-S5-EVO,

21.4-EVO

versions before 21.4R3-S4-EVO,

22.1-EVO

versions before 22.1R3-S3-EVO,

22.2-EVO

versions before 22.2R3-S1-EVO,

22.3-EVO

versions before 22.3R3-EVO,

22.4-EVO

versions before 22.4R2-EVO.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "20.4R3-S8",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "21.2R3-S6",
        "status": "affected",
        "version": "21.2",
        "versionType": "semver"
      },
      {
        "lessThan": "21.3R3-S5",
        "status": "affected",
        "version": "21.3",
        "versionType": "semver"
      },
      {
        "lessThan": "21.4R3-S4",
        "status": "affected",
        "version": "21.4",
        "versionType": "semver"
      },
      {
        "lessThan": "22.1R3-S3",
        "status": "affected",
        "version": "22.1",
        "versionType": "semver"
      },
      {
        "lessThan": "22.2R3-S1",
        "status": "affected",
        "version": "22.2",
        "versionType": "semver"
      },
      {
        "lessThan": "22.3R3",
        "status": "affected",
        "version": "22.3",
        "versionType": "semver"
      },
      {
        "lessThan": "22.4R2",
        "status": "affected",
        "version": "22.4",
        "versionType": "semver"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "20.4R3-S8-EVO",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "21.2R3-S6-EVO",
        "status": "affected",
        "version": "21.2-EVO",
        "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": "22.1R3-S3-EVO",
        "status": "affected",
        "version": "22.1-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "22.2R3-S1-EVO",
        "status": "affected",
        "version": "22.2-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "22.3R3-EVO",
        "status": "affected",
        "version": "22.3-EVO",
        "versionType": "semver"
      },
      {
        "lessThan": "22.4R2-EVO",
        "status": "affected",
        "version": "22.4-EVO",
        "versionType": "semver"
      }
    ]
  }
]

References

supportportal.juniper.net/JSA79184

www.first.org/cvss/calculator/4.0#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

5.3 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.1 High

CVSS4

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/SC:N/VI:N/SI:N/VA:H/SA:L

5.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.9%

JSON

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