title: Junos OS: QFX10002-60C: Use after free vulnerability found during static code analysis
description: Through routine static code analysis of the Juniper Networks Junos OS software codebase, the Secure Development Life Cycle team identified a Use After Free vulnerability in PFE packet processing on the QFX10002-60C switching platform. Exploitation of this vulnerability may allow a logically adjacent attacker to trigger a Denial of Service (DoS). Continued exploitation of this vulnerability will sustain the Denial of Service (DoS) condition. This issue only affects QFX10002-60C devices. No other product or platform is vulnerable to this issue. This issue affects Juniper Networks Junos OS on QFX10002-60C: 19.1 version 19.1R3-S1 and later versions; 19.1 versions prior to 19.1R3-S3; 19.2 version 19.2R2 and later versions; 19.2 versions prior to 19.2R3-S1; 20.2 versions prior to 20.2R1-S2. This issue does not affect Juniper Networks Junos OS: versions prior to 19.1R3; 19.2 versions prior to 19.2R2; any version of 19.3; version 20.2R2 and later releases.
problem types: CWE-416 Use After Free
affected:
{
platforms: QFX10002-60C
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 19.1R3, status: unaffected, version: unspecified, versionType: custom
status: unaffected, version: 19.3
lessThan: unspecified, status: unaffected, version: 20.2R2, versionType: custom
changes: [at: 19.1R3-S3, status: unaffected], lessThan: 19.1*, status: affected, version: 19.1R3-S1, versionType: custom
changes: [at: 19.2R2, status: affected], lessThan: 19.2R2, status: unaffected, version: 19.2, versionType: custom
lessThan: 20.2R1-S2, status: affected, version: 20.2, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: ADJACENT_NETWORK
availabilityImpact: HIGH
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
exploits: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
solutions: The following software releases have been updated to resolve this specific issue: Junos OS 19.1R3-S3, 19.2R3-S1, 20.2R1-S2, and all subsequent releases.
workarounds: There are no viable workarounds for this issue.