Junos OS: SRX 5000 Series: Repeated execution of a specific CLI command causes a flowd 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 20.4R3-S6, 21.1R3-S5, 21.2R3-S4, 21.3R3-S3, 21.4R3-S3, and 3 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
A Heap-based Buffer Overflow vulnerability in the Network Services Daemon (NSD) of Juniper Networks Junos OS allows authenticated, low privileged, local attacker to cause a Denial of Service (DoS). On an SRX 5000 Series device, when executing a specific command repeatedly, memory is corrupted, which leads to a Flow Processing Daemon (flowd) crash. The NSD process has to be restarted to restore services. If this issue occurs, it can be checked with the following command: user@host> request security policies check The following log message can also be observed: Error: policies are out of sync for PFE node<number>.fpc<number>.pic<number>. This issue affects: Juniper Networks Junos OS on SRX 5000 Series • All versions earlier than 20.4R3-S6; • 21.1 versions earlier than 21.1R3-S5; • 21.2 versions earlier than 21.2R3-S4; • 21.3 versions earlier than 21.3R3-S3; • 21.4 versions earlier than 21.4R3-S3; • 22.1 versions earlier than 22.1R3-S1; • 22.2 versions earlier than 22.2R3; • 22.3 versions earlier than 22.3R2.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Juniper Networks Junos OS
fixed in 20.4R3-S6; From 21.1 · fixed in 21.1R3-S5; From 21.2 · fixed in 21.2R3-S4; From 21.3 · fixed in 21.3R3-S3; From 21.4 · fixed in 21.4R3-S3; From 22.1 · fixed in 22.1R3-S1; From 22.2 · fixed in 22.2R3; From 22.3 · fixed in 22.3R2