CVE-2024-39526
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2024
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Junos OS and Junos OS Evolved: MX Series with MPC10/MPC11/LC9600, MX304, EX9200, PTX Series: Receipt of malformed DHCP packets causes interfaces to stop processing packets
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
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Junos OS
- Vendor
- Juniper Networks
- Product
- Junos OS
- Platforms
- MX Series
- MX304
- EX9200
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | semver | 21.2R3-S7 | Unavailable | None listed |
| 21.4 | affected | semver | 21.4R3-S6 | Unavailable | None listed |
| 22.2 | affected | semver | 22.2R3-S3 | Unavailable | None listed |
| 22.3 | affected | custom | Unavailable | Unavailable | None listed |
| 22.4 | affected | semver | 22.4R3 | Unavailable | None listed |
| 23.2 | affected | semver | 23.2R2 | Unavailable | None listed |
Junos OS Evolved
- Vendor
- Juniper Networks
- Product
- Junos OS Evolved
- Platforms
- PTX Series
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 19.3R1-EVO | affected | semver | 21.2R3-S8-EVO | Unavailable | None listed |
| 21.4-EVO | affected | semver | 21.4R3-S7-EVO | Unavailable | None listed |
| 22.1-EVO | affected | semver | 22.1R3-S6-EVO | Unavailable | None listed |
| 22.2-EVO | affected | semver | 22.2R3-S5-EVO | Unavailable | None listed |
| 22.3-EVO | affected | semver | 22.3R3-S3-EVO | Unavailable | None listed |
| 22.4-EVO | affected | semver | 22.4R3-S1-EVO | Unavailable | None listed |
| 23.2-EVO | affected | semver | 23.2R2-S2-EVO | Unavailable | None listed |
| 23.4-EVO | affected | semver | 23.4R2-EVO | Unavailable | None listed |
| 0 | unaffected | semver | 19.3R1-EVO | Unavailable | None listed |