Junos OS and Junos OS Evolved: Use after free vulnerability In 802.1X authentication daemon can cause crash of the dot1xd process
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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-S5, 23.4R2-S6, 24.2R2-S3, 24.4R2-S1, 23.2R2-S5-EVO, 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: total
Summary
A Use After Free vulnerability was identified in the 802.1X authentication daemon (dot1xd) of Juniper Networks Junos OS and Junos OS Evolved that could allow an authenticated, network-adjacent attacker flapping a port to crash the dot1xd process, leading to a Denial of Service (DoS), or potentially execute arbitrary code within the context of the process running as root. The issue is specific to the processing of a change in authorization (CoA) when a port bounce occurs. A pointer is freed but was then referenced later in the same code path. Successful exploitation is outside the attacker's direct control due to the specific timing of the two events required to execute the vulnerable code path. This issue affects systems with 802.1X authentication port-based network access control (PNAC) enabled. This issue affects: Junos OS: • from 23.2R2-S1 before 23.2R2-S5, • from 23.4R2 before 23.4R2-S6, • from 24.2 before 24.2R2-S3, • from 24.4 before 24.4R2-S1, • from 25.2 before 25.2R1-S2, 25.2R2; Junos OS Evolved: • from 23.2R2-S1 before 23.2R2-S5-EVO, • from 23.4R2 before 23.4R2-S6-EVO, • from 24.2 before 24.2R2-S3-EVO, • from 24.4 before 24.4R2-S1-EVO, • from 25.2 before 25.2R1-S2-EVO, 25.2R2-EVO.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Juniper Networks Junos OS
From 23.2R2-S1 · fixed in 23.2R2-S5; From 23.4R2 · fixed in 23.4R2-S6; From 24.2 · fixed in 24.2R2-S3; From 24.4 · fixed in 24.4R2-S1
- Juniper Networks Junos OS Evolved
From 23.2R2-S1 · fixed in 23.2R2-S5-EVO; From 23.4R2 · fixed in 23.4R2-S6-EVO; From 24.2 · fixed in 24.2R2-S3-EVO; From 24.4 · fixed in 24.4R2-S1-EVO