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CVE-2024-39536

MEDIUM
Published 2024-07-11T16:13:24.485Z
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CVSS Score

V3.1
5.3
/10
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.171
Higher than 17.1% of all CVEs

Attack Vector Metrics

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

A Missing Release of Memory after Effective Lifetime vulnerability in the Periodic Packet Management Daemon (ppmd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a

Denial-of-Service (DoS).

When a BFD session configured with authentication flaps, ppmd memory can leak. Whether the leak happens depends on a race condition which is outside the attackers control. This issue only affects BFD operating in distributed aka delegated (which is the default behavior) or inline mode.

Whether the leak occurs can be monitored with the following CLI command:

> show ppm request-queue

FPC     Pending-request
fpc0                   2
request-total-pending: 2

where a continuously increasing number of pending requests is indicative of the leak. 

This issue affects:

Junos OS:

* All versions before 21.2R3-S8,
* 21.4 versions before 21.4R3-S7,
* 22.1 versions before 22.1R3-S4,
* 22.2 versions before 22.2R3-S4,
* 22.3 versions before 22.3R3,
* 22.4 versions before 22.4R2-S2, 22.4R3.

Junos OS Evolved:
* All versions before 21.2R3-S8-EVO,
* 21.4-EVO versions before 21.4R3-S7-EVO,
* 22.2-EVO versions before 22.2R3-S4-EVO,
* 22.3-EVO versions before 22.3R3-EVO,
* 22.4-EVO versions before 22.4R3-EVO.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Juniper Networks

Junos OS

Affected Versions:

0 21.4 22.1 22.2 22.3 22.4
Juniper Networks

Junos OS Evolved

Affected Versions:

21.2-EVO 21.4-EVO 22.2-EVO 22.3-EVO 22.4-EVO 23.2-EVO
juniper

junos_os

Affected Versions:

0 21.4 22.1 22.2 22.3 22.4 22.4
juniper

junos_os_evolved

Affected Versions:

21.2-EVO 21.4-EVO 22.2-EVO 22.3-EVO 22.4-EVO 23.2-EVO

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-vpjj-mfgj-j3mj

Advisory Details

A Missing Release of Memory after Effective Lifetime vulnerability in the Periodic Packet Management Daemon (ppmd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS). When a BFD session configured with authentication flaps, ppmd memory can leak. Whether the leak happens depends on a race condition which is outside the attackers control. This issue only affects BFD operating in distributed aka delegated (which is the default behavior) or inline mode. Whether the leak occurs can be monitored with the following CLI command: > show ppm request-queue FPC     Pending-request fpc0                   2 request-total-pending: 2 where a continuously increasing number of pending requests is indicative of the leak.  This issue affects: Junos OS: * All versions before 21.2R3-S8, * 21.4 versions before 21.4R3-S7, * 22.1 versions before 22.1R3-S4, * 22.2 versions before 22.2R3-S4,  * 22.3 versions before 22.3R3, * 22.4 versions before 22.4R2-S2, 22.4R3, * 23.1 versions before 23.1R2. Junos OS Evolved: * All versions before 21.2R3-S8-EVO, * 21.4-EVO versions before 21.4R3-S7-EVO, * 22.2-EVO versions before 22.2R3-S4-EVO, * 22.3-EVO versions before 22.3R3-EVO, * 22.4-EVO versions before 22.4R3-EVO, * 23.2-EVO versions before 23.2R1-EVO.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-39536
WEB https://supportportal.juniper.net/JSA82996

Advisory provided by GitHub Security Advisory Database. Published: July 11, 2024, Modified: July 12, 2024

References

https://supportportal.juniper.net/JSA82996
Published: 2024-07-11T16:13:24.485Z
Last Modified: 2024-08-02T04:26:15.613Z
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