Vulnerability in Juniper Junos
CVE-2024-39549
A Missing Release of Memory after Effective Lifetime vulnerability in the routing process daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a malformed BGP Path attribute update which allocates memory used to log the bad path attribute. This memory is not properly freed in all circumstances, leading to a Denial of Service (DoS). Consumed memory can be freed by manually restarting Routing Protocol Daemon (rpd). Memory utilization could be monitored by: user@host> show system memory or show system monitor memory status This issue affects: Junos OS: * All versions before 21.2R3-S8, * from 21.4 before 21.4R3-S8, * from 22.2 before 22.2R3-S4, * from 22.3 before 22.3R3-S3, * from 22.4 before 22.4R3-S3, * from 23.2 before 23.2R2-S1, * from 23.4 before 23.4R1-S2, 23.4R2. Junos OS Evolved: * All versions before 21.2R3-S8-EVO, * from 21.4 before 21.4R3-S8-EVO, * from 22.2 before 22.2R3-S4-EVO, * from 22.3 before 22.3R3-S3-EVO, * from 22.4 before 22.4R3-S3-EVO, * from 23.2 before 23.2R2-S1-EVO, * from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (38.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Juniper Junos — versions 21.2, 21.4, 22.2
- Juniper Junos OS Evolved — versions 21.2, 21.4, 22.2
- Juniper Networks Junos OS — versions 0, 21.4, 22.2
- Juniper Networks Junos OS Evolved — versions 0, 21.4, 22.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- supportportal.juniper.net/JSA83011 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2024-39549?
- CVE-2024-39549 is a high-severity vulnerability in Juniper Junos, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2024-07-11.
- How severe is CVE-2024-39549?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2024-39549 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.