CVE-2021-0254
Summary
| CVE | CVE-2021-0254 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-04-22 20:15:00 UTC |
| Updated | 2022-08-05 17:14:00 UTC |
| Description | A buffer size validation vulnerability in the overlayd service of Juniper Networks Junos OS may allow an unauthenticated remote attacker to send specially crafted packets to the device, triggering a partial Denial of Service (DoS) condition, or leading to remote code execution (RCE). Continued receipt and processing of these packets will sustain the partial DoS. The overlayd daemon handles Overlay OAM packets, such as ping and traceroute, sent to the overlay. The service runs as root by default and listens for UDP connections on port 4789. This issue results from improper buffer size validation, which can lead to a buffer overflow. Unauthenticated attackers can send specially crafted packets to trigger this vulnerability, resulting in possible remote code execution. overlayd runs by default in MX Series, ACX Series, and QFX Series platforms. The SRX Series does not support VXLAN and is therefore not vulnerable to this issue. Other platforms are also vulnerable if a Virtual Extensible LAN (VXLAN) overlay network is configured. This issue affects Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S11; 17.4 versions prior to 17.4R2-S13, 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R2-S8, 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S1; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R2-S1, 20.2R3; 20.3 versions prior to 20.3R1-S1. |
Risk And Classification
Problem Types: CWE-787
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Juniper | Junos | 15.1 | - | All | All |
| Operating System | Juniper | Junos | 15.1 | a1 | All | All |
| Operating System | Juniper | Junos | 15.1 | f | All | All |
| Operating System | Juniper | Junos | 15.1 | f1 | All | All |
| Operating System | Juniper | Junos | 15.1 | f2 | All | All |
| Operating System | Juniper | Junos | 15.1 | f2-s1 | All | All |
| Operating System | Juniper | Junos | 15.1 | f2-s2 | All | All |
| Operating System | Juniper | Junos | 15.1 | f2-s3 | All | All |
| Operating System | Juniper | Junos | 15.1 | f2-s4 | All | All |
| Operating System | Juniper | Junos | 15.1 | f3 | All | All |
| Operating System | Juniper | Junos | 15.1 | f4 | All | All |
| Operating System | Juniper | Junos | 15.1 | f5 | All | All |
| Operating System | Juniper | Junos | 15.1 | f5-s7 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s1 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s10 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s12 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s2 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s3 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s4 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s5 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s6 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s7 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s8 | All | All |
| Operating System | Juniper | Junos | 15.1 | f6-s9 | All | All |
| Operating System | Juniper | Junos | 15.1 | f7 | All | All |
| Operating System | Juniper | Junos | 15.1 | r | All | All |
| Operating System | Juniper | Junos | 15.1 | r1 | All | All |
| Operating System | Juniper | Junos | 15.1 | r2 | All | All |
| Operating System | Juniper | Junos | 15.1 | r3 | All | All |
| Operating System | Juniper | Junos | 15.1 | r4 | All | All |
| Operating System | Juniper | Junos | 15.1 | r4-s7 | All | All |
| Operating System | Juniper | Junos | 15.1 | r4-s8 | All | All |
| Operating System | Juniper | Junos | 15.1 | r4-s9 | All | All |
| Operating System | Juniper | Junos | 15.1 | r5 | All | All |
| Operating System | Juniper | Junos | 15.1 | r5-s1 | All | All |
| Operating System | Juniper | Junos | 15.1 | r5-s3 | All | All |
| Operating System | Juniper | Junos | 15.1 | r5-s5 | All | All |
| Operating System | Juniper | Junos | 15.1 | r5-s6 | All | All |
| Operating System | Juniper | Junos | 15.1 | r6 | All | All |
| Operating System | Juniper | Junos | 15.1 | r6-s1 | All | All |
| Operating System | Juniper | Junos | 15.1 | r6-s2 | All | All |
| Operating System | Juniper | Junos | 15.1 | r6-s3 | All | All |
| Operating System | Juniper | Junos | 15.1 | r6-s4 | All | All |
| Operating System | Juniper | Junos | 15.1 | r6-s6 | All | All |
| Operating System | Juniper | Junos | 15.1 | r7 | All | All |
| Operating System | Juniper | Junos | 15.1 | r7-s1 | All | All |
| Operating System | Juniper | Junos | 15.1 | r7-s2 | All | All |
| Operating System | Juniper | Junos | 15.1 | r7-s3 | All | All |
| Operating System | Juniper | Junos | 15.1 | r7-s4 | All | All |
| Operating System | Juniper | Junos | 15.1 | r7-s5 | All | All |
| Operating System | Juniper | Junos | 15.1 | r7-s6 | All | All |
| Operating System | Juniper | Junos | 15.1 | r7-s7 | All | All |
| Operating System | Juniper | Junos | 15.1 | r7-s8 | All | All |
| Operating System | Juniper | Junos | 17.3 | - | All | All |
| Operating System | Juniper | Junos | 17.3 | r1 | All | All |
| Operating System | Juniper | Junos | 17.3 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 17.3 | r1-s4 | All | All |
| Operating System | Juniper | Junos | 17.3 | r2 | All | All |
| Operating System | Juniper | Junos | 17.3 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 17.3 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 17.3 | r2-s3 | All | All |
| Operating System | Juniper | Junos | 17.3 | r2-s4 | All | All |
| Operating System | Juniper | Junos | 17.3 | r2-s5 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3 | - | All |
| Operating System | Juniper | Junos | 17.3 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3-s10 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3-s3 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3-s4 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3-s5 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3-s6 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3-s7 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3-s8 | All | All |
| Operating System | Juniper | Junos | 17.3 | r3-s9 | All | All |
| Operating System | Juniper | Junos | 17.4 | - | All | All |
| Operating System | Juniper | Junos | 17.4 | r1 | All | All |
| Operating System | Juniper | Junos | 17.4 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 17.4 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 17.4 | r1-s3 | All | All |
| Operating System | Juniper | Junos | 17.4 | r1-s4 | All | All |
| Operating System | Juniper | Junos | 17.4 | r1-s5 | All | All |
| Operating System | Juniper | Junos | 17.4 | r1-s6 | All | All |
| Operating System | Juniper | Junos | 17.4 | r1-s7 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s10 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s11 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s12 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s3 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s4 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s5 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s6 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s7 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s8 | All | All |
| Operating System | Juniper | Junos | 17.4 | r2-s9 | All | All |
| Operating System | Juniper | Junos | 17.4 | r3 | All | All |
| Operating System | Juniper | Junos | 17.4 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 17.4 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 17.4 | r3-s3 | All | All |
| Operating System | Juniper | Junos | 18.1 | - | All | All |
| Operating System | Juniper | Junos | 18.1 | r1 | All | All |
| Operating System | Juniper | Junos | 18.1 | r2 | All | All |
| Operating System | Juniper | Junos | 18.1 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 18.1 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 18.1 | r2-s4 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s10 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s11 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s3 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s4 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s5 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s6 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s7 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s8 | All | All |
| Operating System | Juniper | Junos | 18.1 | r3-s9 | All | All |
| Operating System | Juniper | Junos | 18.2 | - | All | All |
| Operating System | Juniper | Junos | 18.2 | r1 | All | All |
| Operating System | Juniper | Junos | 18.2 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 18.2 | r1-s3 | All | All |
| Operating System | Juniper | Junos | 18.2 | r1-s4 | All | All |
| Operating System | Juniper | Junos | 18.2 | r1-s5 | All | All |
| Operating System | Juniper | Junos | 18.2 | r2 | All | All |
| Operating System | Juniper | Junos | 18.2 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 18.2 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 18.2 | r2-s3 | All | All |
| Operating System | Juniper | Junos | 18.2 | r2-s4 | All | All |
| Operating System | Juniper | Junos | 18.2 | r2-s5 | All | All |
| Operating System | Juniper | Junos | 18.2 | r2-s6 | All | All |
| Operating System | Juniper | Junos | 18.2 | r2-s7 | All | All |
| Operating System | Juniper | Junos | 18.2 | r3 | All | All |
| Operating System | Juniper | Junos | 18.2 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 18.2 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 18.2 | r3-s3 | All | All |
| Operating System | Juniper | Junos | 18.2 | r3-s4 | All | All |
| Operating System | Juniper | Junos | 18.2 | r3-s5 | All | All |
| Operating System | Juniper | Junos | 18.2 | r3-s6 | All | All |
| Operating System | Juniper | Junos | 18.3 | - | All | All |
| Operating System | Juniper | Junos | 18.3 | r1 | All | All |
| Operating System | Juniper | Junos | 18.3 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 18.3 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 18.3 | r1-s3 | All | All |
| Operating System | Juniper | Junos | 18.3 | r1-s4 | All | All |
| Operating System | Juniper | Junos | 18.3 | r1-s5 | All | All |
| Operating System | Juniper | Junos | 18.3 | r1-s6 | All | All |
| Operating System | Juniper | Junos | 18.3 | r2 | All | All |
| Operating System | Juniper | Junos | 18.3 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 18.3 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 18.3 | r2-s3 | All | All |
| Operating System | Juniper | Junos | 18.3 | r2-s4 | All | All |
| Operating System | Juniper | Junos | 18.3 | r3 | All | All |
| Operating System | Juniper | Junos | 18.3 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 18.3 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 18.3 | r3-s3 | All | All |
| Operating System | Juniper | Junos | 18.4 | - | All | All |
| Operating System | Juniper | Junos | 18.4 | r1 | All | All |
| Operating System | Juniper | Junos | 18.4 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 18.4 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 18.4 | r1-s3 | All | All |
| Operating System | Juniper | Junos | 18.4 | r1-s4 | All | All |
| Operating System | Juniper | Junos | 18.4 | r1-s5 | All | All |
| Operating System | Juniper | Junos | 18.4 | r1-s6 | All | All |
| Operating System | Juniper | Junos | 18.4 | r1-s7 | All | All |
| Operating System | Juniper | Junos | 18.4 | r2 | All | All |
| Operating System | Juniper | Junos | 18.4 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 18.4 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 18.4 | r2-s3 | All | All |
| Operating System | Juniper | Junos | 18.4 | r2-s4 | All | All |
| Operating System | Juniper | Junos | 18.4 | r2-s5 | All | All |
| Operating System | Juniper | Junos | 18.4 | r2-s6 | All | All |
| Operating System | Juniper | Junos | 18.4 | r3 | All | All |
| Operating System | Juniper | Junos | 18.4 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 18.4 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 18.4 | r3-s3 | All | All |
| Operating System | Juniper | Junos | 18.4 | r3-s4 | All | All |
| Operating System | Juniper | Junos | 18.4 | r3-s5 | All | All |
| Operating System | Juniper | Junos | 18.4 | r3-s6 | All | All |
| Operating System | Juniper | Junos | 19.1 | - | All | All |
| Operating System | Juniper | Junos | 19.1 | r1 | All | All |
| Operating System | Juniper | Junos | 19.1 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 19.1 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 19.1 | r1-s3 | All | All |
| Operating System | Juniper | Junos | 19.1 | r1-s4 | All | All |
| Operating System | Juniper | Junos | 19.1 | r1-s5 | All | All |
| Operating System | Juniper | Junos | 19.1 | r2 | All | All |
| Operating System | Juniper | Junos | 19.1 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 19.1 | r3 | All | All |
| Operating System | Juniper | Junos | 19.1 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 19.1 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 19.1 | r3-s3 | All | All |
| Operating System | Juniper | Junos | 19.2 | - | All | All |
| Operating System | Juniper | Junos | 19.2 | r1 | All | All |
| Operating System | Juniper | Junos | 19.2 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 19.2 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 19.2 | r1-s3 | All | All |
| Operating System | Juniper | Junos | 19.2 | r1-s4 | All | All |
| Operating System | Juniper | Junos | 19.2 | r1-s5 | All | All |
| Operating System | Juniper | Junos | 19.2 | r2 | All | All |
| Operating System | Juniper | Junos | 19.2 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 19.2 | r3 | All | All |
| Operating System | Juniper | Junos | 19.2 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 19.3 | - | All | All |
| Operating System | Juniper | Junos | 19.3 | r1 | All | All |
| Operating System | Juniper | Junos | 19.3 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 19.3 | r2 | All | All |
| Operating System | Juniper | Junos | 19.3 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 19.3 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 19.3 | r2-s3 | All | All |
| Operating System | Juniper | Junos | 19.3 | r2-s4 | All | All |
| Operating System | Juniper | Junos | 19.3 | r2-s5 | All | All |
| Operating System | Juniper | Junos | 19.3 | r3 | All | All |
| Operating System | Juniper | Junos | 19.4 | r1 | All | All |
| Operating System | Juniper | Junos | 19.4 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 19.4 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 19.4 | r2 | All | All |
| Operating System | Juniper | Junos | 19.4 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 19.4 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 19.4 | r2-s3 | All | All |
| Operating System | Juniper | Junos | 19.4 | r3 | All | All |
| Operating System | Juniper | Junos | 20.1 | r1 | All | All |
| Operating System | Juniper | Junos | 20.1 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 20.1 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 20.1 | r1-s3 | All | All |
| Operating System | Juniper | Junos | 20.1 | r1-s4 | All | All |
| Operating System | Juniper | Junos | 20.1 | r2 | All | All |
| Operating System | Juniper | Junos | 20.2 | r1 | All | All |
| Operating System | Juniper | Junos | 20.2 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 20.2 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 20.2 | r1-s3 | All | All |
| Operating System | Juniper | Junos | 20.2 | r2 | All | All |
| Operating System | Juniper | Junos | 20.3 | r1 | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| 2021-04 Security Bulletin: Junos OS: Remote code execution vulnerability in overlayd service (CVE-2021-0254) - Juniper Networks | MISC | kb.juniper.net | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
LEGACY: Juniper SIRT would like to acknowledge and thank Hoàng Thạch Nguyễn (d4rkn3ss) of STAR Labs for responsibly reporting this vulnerability.
Legacy QID Mappings
- 43827 Juniper Junos Remote Code Execution Vulnerability (JSA11147)