CVE-2026-21911 (CNNVD-202601-2537)
中文标题:
Juniper Junos OS Evolved 安全漏洞
英文标题:
Junos OS Evolved: Flapping management interface causes MAC learning on label-switched interfaces to stop
漏洞描述
中文描述:
Juniper Junos OS Evolved是美国瞻博(Juniper)公司的一个网络操作系统。 Juniper Junos OS Evolved 21.4R3-S7-EVO之前版本、22.2R3-S4-EVO之前版本、22.3R3-S3-EVO之前版本、22.4R3-S2-EVO之前版本、23.2R2-S1-EVO之前版本、23.4R1-S2-EVO和23.4R2-EVO之前版本存在安全漏洞,该漏洞源于第2层控制协议守护进程存在计算错误,可能导致高CPU使用率。
英文描述:
An Incorrect Calculation vulnerability in the Layer 2 Control Protocol Daemon (l2cpd) of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker flapping the management interface to cause the learning of new MACs over label-switched interfaces (LSI) to stop while generating a flood of logs, resulting in high CPU usage. When the issue is seen, the following log message will be generated: op:1 flag:0x6 mac:xx:xx:xx:xx:xx:xx bd:2 ifl:13302 reason:0(REASON_NONE) i-op:6(INTRNL_OP_HW_FORCE_DELETE) status:10 lstatus:10 err:26(GETIFBD_VALIDATE_FAILED) err-reason 4(IFBD_VALIDATE_FAIL_EPOCH_MISMATCH) hw_wr:0x4 ctxsync:0 fwdsync:0 rtt-id:51 p_ifl:0 fwd_nh:0 svlbnh:0 event:- smask:0x100000000 dmask:0x0 mplsmask 0x1 act:0x5800 extf:0x0 pfe-id 0 hw-notif-ifl 13302 programmed-ifl 4294967295 pseudo-vtep underlay-ifl-idx 0 stack:GET_MAC, ALLOCATE_MAC, GET_IFL, GET_IFF, GET_IFBD, STOP, This issue affects Junos OS Evolved: * all versions before 21.4R3-S7-EVO, * from 22.2 before 22.2R3-S4-EVO, * from 22.3 before 22.3R3-S3-EVO, * from 22.4 before 22.4R3-S2-EVO, * from 23.2 before 23.2R2-S1-EVO, * from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| Juniper Networks | Junos OS Evolved | - | < 21.4R3-S7-EVO | - |
cpe:2.3:a:juniper_networks:junos_os_evolved:*:*:*:*:*:*:*:*
|
| juniper | junos_os_evolved | * | - | - |
cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*
|
| juniper | junos_os_evolved | 21.4 | - | - |
cpe:2.3:o:juniper:junos_os_evolved:21.4:-:*:*:*:*:*:*
|
| juniper | junos_os_evolved | 22.2 | - | - |
cpe:2.3:o:juniper:junos_os_evolved:22.2:-:*:*:*:*:*:*
|
| juniper | junos_os_evolved | 22.3 | - | - |
cpe:2.3:o:juniper:junos_os_evolved:22.3:-:*:*:*:*:*:*
|
| juniper | junos_os_evolved | 22.4 | - | - |
cpe:2.3:o:juniper:junos_os_evolved:22.4:-:*:*:*:*:*:*
|
| juniper | junos_os_evolved | 23.2 | - | - |
cpe:2.3:o:juniper:junos_os_evolved:23.2:-:*:*:*:*:*:*
|
| juniper | junos_os_evolved | 23.4 | - | - |
cpe:2.3:o:juniper:junos_os_evolved:23.4:-:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
CVSS评分详情
3.1 (cna)
MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 (cna)
HIGHCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M/U:Amber
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2026-21911 |
2026-01-16 02:21:11 | 2026-01-16 02:44:26 |
| NVD | nvd_CVE-2026-21911 |
2026-01-16 02:47:34 | 2026-01-16 02:48:09 |
| CNNVD | cnnvd_CNNVD-202601-2537 |
2026-01-19 09:28:44 | 2026-01-19 09:29:39 |
版本与语言
安全公告
变更历史
查看详细变更
- affected_products_count: 1 -> 8
查看详细变更
- vulnerability_type: 未提取 -> 其他
- cnnvd_id: 未提取 -> CNNVD-202601-2537
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 6 -> 1
- data_sources: ['cve'] -> ['cve', 'nvd']