Description (CNA)
An Improper Validation of Syntactic Correctness of Input vulnerability in the Juniper DHCP daemon (jdhcpd) of Juniper Networks Junos OS allows an adjacent unauthenticated attacker sending a malformed DHCP packet to cause a crash of jdhcpd and thereby a Denial of Service (DoS). If option-82 is configured in a DHCP snooping / -security scenario, jdhcpd crashes if a specific malformed DHCP request packet is received. The DHCP functionality is impacted while jdhcpd restarts, and continued exploitation of the vulnerability will lead to the unavailability of the DHCP service and thereby a sustained DoS. This issue affects Juniper Networks Junos OS 13.2 version 13.2R1 and later versions prior to 15.1R7-S11; 18.3 versions prior to 18.3R3-S6; 18.4 versions prior to 18.4R2-S9, 18.4R3-S10; 19.1 versions prior to 19.1R2-S3, 19.1R3-S7; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4; 19.3 versions prior to 19.3R2-S7, 19.3R3-S4; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R3-S3; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R1-S1, 21.2R2. This issue does not affect Juniper Networks Junos OS version 12.3R12 and prior versions.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Juniper Networks / Junos OS | affected unspecified before 15.1R7-S11; unaffected unspecified through 12.3R12; affected 13.2R1 before 13.2*; affected 18.3 before 18.3R3-S6; affected 18.4 before 18.4R2-S9, 18.4R3-S10; affected 19.1 before 19.1R2-S3, 19.1R3-S7; affected 19.2 before 19.2R1-S8, 19.2R3-S4; affected 19.3 before 19.3R2-S7, 19.3R3-S4; affected 19.4 before 19.4R3-S6; affected 20.1 before 20.1R3-S3; affected 20.2 before 20.2R3-S3; affected 20.3 before 20.3R3-S1; affected 20.4 before 20.4R3; affected 21.1 before 21.1R2-S1, 21.1R3; affected 21.2 before 21.2R1-S1, 21.2R2 |
CWE
CWE-1286
References
ADP enrichment
No English description supplied.