Junos OS: SRX Series: With WebFiltering enabled prolonged HTTP session load can cause a crash
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S4, 25.2R2-S1, and 1 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
An Improper Resource Locking vulnerability in the UTM processing of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). When UTM WebFiltering is configured and the WebFiltering cloud server is unreachable, sustained HTTP traffic load may cause the UTM subsystem to crash and restart, which will lead to a complete service outage until the system has recovered. When category lookup requests cannot be completed, they accumulate internally. Under high load and specific timing conditions, an invalid internal state can occur during cleanup of pending WebFiltering lookups, resulting in a crash of the UTM process. This issue applies to both NextGeneration WebFiltering (NGWF) and Enhanced WebFiltering (EWF). This issue affects Junos OS on SRX Series: • 23.2 versions from 23.2R2 before 23.2R2-S7.7; • 23.4 versions from 23.4R2 before 23.4R2-S8.13; • 24.2 versions before 24.2R2-S5.5; • 24.4 versions before 24.4R2-S4; • 25.2 versions before 25.2R2-S1; • 25.4 versions before 25.4R1-S3, 25.4R2.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Juniper Networks Junos OS
From 23.2R2 · fixed in 23.2R2-S7.7; From 23.4R2 · fixed in 23.4R2-S8.13; From 24.2 · fixed in 24.2R2-S5.5; From 24.4 · fixed in 24.4R2-S4; From 25.2 · fixed in 25.2R2-S1; From 25.4 · fixed in 25.4R1-S3, 25.4R2