Junos OS: An unauthenticated attacker with local access to the device can create a backdoor with root privileges
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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-S5, 21.1R3-S4, 21.2R3-S4, 21.3R3-S3, 21.4R3-S1
- 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: total
Summary
An Incorrect Default Permissions vulnerability in Juniper Networks Junos OS allows an unauthenticated attacker with local access to the device to create a backdoor with root privileges. The issue is caused by improper directory permissions on a certain system directory, allowing an attacker with access to this directory to create a backdoor with root privileges. This issue affects Juniper Networks Junos OS: • All versions prior to 20.4R3-S5; • 21.1 versions prior to 21.1R3-S4; • 21.2 versions prior to 21.2R3-S4; • 21.3 versions prior to 21.3R3-S3; • 21.4 versions prior to 21.4R3-S1.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Juniper Networks Junos OS
fixed in 20.4R3-S5; From 21.1 · fixed in 21.1R3-S4; From 21.2 · fixed in 21.2R3-S4; From 21.3 · fixed in 21.3R3-S3; From 21.4 · fixed in 21.4R3-S1