# SRX系列GRE加速ICMP导致PFE崩溃漏洞
N/A
是否为 Web 类漏洞: 未知
判断理由:
| # | POC 描述 | 源链接 | 神龙链接 |
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标题: 2026-01 Security Bulletin: Junos OS: SRX Series: With GRE performance acceleration enabled, receipt of a specific ICMP packet causes the PFE to crash (CVE-2026-21906) -- 🔗来源链接
标签:vendor-advisory
神龙速读:
### Key Vulnerability Information
- **Title:** 2026-01 Security Bulletin: Junos OS: SRX Series: With GRE performance acceleration enabled, receipt of a specific ICMP packet causes the PFE to crash (CVE-2026-21906)
- **Affected Product:** All versions of Junos OS on SRX Series.
- **Severity:** High
- **CVSS Scores:**
- CVSS v3.1: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- CVSS v4.0: 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:YR:A/V:C/RE:M/U:Red)
- **Problem:** An unauthenticated network-based attacker can send a specific ICMP packet through a GRE tunnel to cause the PFE to crash and restart, requiring GRE performance acceleration and PowerMode IPsec (PMI) to be enabled.
- **Solution:** Upgrade to Junos OS 21.4R3-S12, 22.4R3-S8, 23.2R2-S5, 23.4R2-S5, 24.2R2-S3, 24.4R2-S1, 25.2R1-S1, 25.2R2, 25.4R1, or any subsequent releases.
- **Workaround:** Disable GRE performance acceleration via 'deactivate security flow gre-performance-acceleration' or disable PMI via 'set security flow power-mode-disable'.
标题: 2026-01 Security Bulletin: Junos OS: SRX Series: With GRE performance acceleration enabled, receipt of a specific ICMP packet causes the PFE to crash (CVE-2026-21906) -- 🔗来源链接
标签:vendor-advisory
神龙速读:
### 关键信息摘要
- **漏洞编号**: CVE-2026-21906
- **受影响产品**: Junos OS SRX Series的所有版本
- **漏洞严重性**: 高
#### 漏洞详情
- **问题描述**:
- PB一旦接收到特定ICMP包,会导致SRX包转发引擎(PFE)崩溃并重启。
- 通过GRE隧道发送特定ICMP包时,若同时启用了PowerMode IPsec(PMI)和GRE性能加速,则SRX PFE会崩溃,引起流量丢失。
- **影响条件**:
- 需要启用GRE性能加速功能。
- 影响的具体版本在21.4R3-S12及以前的多个版本中。
#### 解决方案
- **修复版本**:
- Junos OS 21.4R3-S12, 22.4R3-S8, 23.2R2-S5, 23.4R2-S5等及其后续版本。
- **临时解决方法**:
- 禁用GRE性能加速或PMI功能。
#### 附加信息
- **漏洞评分(CVSS)**: CVSSv3.1:7.5 和 CVSSv4.0:8.7
- **发现情况**: 在内部产品安全测试或研究中找到,尚未发现恶意利用此漏洞的报告。
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