CVE-2024-39526
Oct. 15, 2024, 12:58 p.m.
Tags
CVSS Score
Product(s) Impacted
Junos OS
- All versions before 21.2R3-S7
- from 21.4 before 21.4R3-S6
- from 22.2 before 22.2R3-S3
- all versions of 22.3
- from 22.4 before 22.4R3
- from 23.2 before 23.2R2
Junos OS Evolved
- from 19.3R1-EVO before 21.2R3-S8-EVO
- from 21.4-EVO before 21.4R3-S7-EVO
- from 22.1-EVO before 22.1R3-S6-EVO
- from 22.2-EVO before 22.2R3-S5-EVO
- from 22.3-EVO before 22.3R3-S3-EVO
- from 22.4-EVO before 22.4R3-S1-EVO
- from 23.2-EVO before 23.2R2-S2-EVO
- from 23.4-EVO before 23.4R2-EVO
Description
An Improper Handling of Exceptional Conditions vulnerability in packet processing of Juniper Networks Junos OS on MX Series with MPC10/MPC11/LC9600 line cards, EX9200 with EX9200-15C lines cards, MX304 devices, and Juniper Networks Junos OS Evolved on PTX Series, allows an attacker sending malformed DHCP packets to cause ingress packet processing to stop, leading to a Denial of Service (DoS). Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. This issue only occurs if DHCP snooping is enabled. See configuration below. This issue can be detected using following commands. Their output will display the interface status going down: user@device>show interfaces <if--x/x/x> user@device>show log messages | match <if--x/x/x> user@device>show log messages ==> will display the "[Error] Wedge-Detect : Host Loopback Wedge Detected: PFE: no," logs. This issue affects: Junos OS on MX Series with MPC10/MPC11/LC9600 line cards, EX9200 with EX9200-15C line cards, and MX304: * All versions before 21.2R3-S7, * from 21.4 before 21.4R3-S6, * from 22.2 before 22.2R3-S3, * all versions of 22.3, * from 22.4 before 22.4R3, * from 23.2 before 23.2R2; Junos OS Evolved on PTX Series: * from 19.3R1-EVO before 21.2R3-S8-EVO, * from 21.4-EVO before 21.4R3-S7-EVO, * from 22.1-EVO before 22.1R3-S6-EVO, * from 22.2-EVO before 22.2R3-S5-EVO, * from 22.3-EVO before 22.3R3-S3-EVO, * from 22.4-EVO before 22.4R3-S1-EVO, * from 23.2-EVO before 23.2R2-S2-EVO, * from 23.4-EVO before 23.4R2-EVO. Junos OS Evolved releases prior to 19.3R1-EVO are unaffected by this vulnerability
Weaknesses
CWE-755
Improper Handling of Exceptional Conditions
The product does not handle or incorrectly handles an exceptional condition.
CWE ID: 755Date
Published: Oct. 11, 2024, 4:15 p.m.
Last Modified: Oct. 15, 2024, 12:58 p.m.
Status : Awaiting Analysis
CVE has been recently published to the CVE List and has been received by the NVD.
More infoSource
sirt@juniper.net
CVSS Data
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Base Score
Exploitability Score
Impact Score
Base Severity
MEDIUMCVSS Vector String
The CVSS vector string provides an in-depth view of the vulnerability metrics.
View Vector StringCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H