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CVE-2020-4060— Semtech LoRa Basics Station 资源管理错误漏洞

一分钟漏洞结论

影响对象
LoRa Basics LoRa Basics Station
利用判断
尚无明确在野利用证据,仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本;无法立即升级时,限制受影响服务暴露并加强监测。

LoRa Basics Station是一款LoRaWAN(长距离广域网)网关的实现。 Semtech LoRa Basics Station 2.0.4之前版本中存在资源管理错误漏洞。该漏洞源于网络系统或产品对系统资源(如内存、磁盘空间、文件等)的管理不当。

CVSS 4.1 · Medium EPSS 0.95% · P58
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一、 漏洞 CVE-2020-4060 基础信息

漏洞信息

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Vulnerability Title
Use After Free in in cups_update_info in LoRa Basics Station
来源: CVE Program / CVE List V5
Vulnerability Description
In LoRa Basics Station before 2.0.4, there is a Use After Free vulnerability that leads to memory corruption. This bug is triggered on 32-bit machines when the CUPS server responds with a message (https://doc.sm.tc/station/cupsproto.html#http-post-response) where the signature length is larger than 2 GByte (never happens in practice), or the response is crafted specifically to trigger this issue (i.e. the length signature field indicates a value larger than (2**31)-1 although the signature actually does not contain that much data). In such a scenario, on 32 bit machines, Basic Station would execute a code path, where a piece of memory is accessed after it has been freed, causing the process to crash and restarted again. The CUPS transaction is typically mutually authenticated over TLS. Therefore, in order to trigger this vulnerability, the attacker would have to gain access to the CUPS server first. If the user chose to operate without authentication over TLS but yet is concerned about this vulnerability, one possible workaround is to enable TLS authentication. This has been fixed in 2.0.4.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:L
来源: CVE Program / CVE List V5
Vulnerability Type
释放后使用
来源: CVE Program / CVE List V5
Vulnerability Title
Semtech LoRa Basics Station 资源管理错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
LoRa Basics Station是一款LoRaWAN(长距离广域网)网关的实现。 Semtech LoRa Basics Station 2.0.4之前版本中存在资源管理错误漏洞。该漏洞源于网络系统或产品对系统资源(如内存、磁盘空间、文件等)的管理不当。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
LoRa Basics LoRa Basics Station < 2.0.4 -

二、漏洞 CVE-2020-4060 的公开POC

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三、漏洞 CVE-2020-4060 的情报信息

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CVE-2020-4060 厂商安全公告 (1)

IV. Related Vulnerabilities

V. Comments for CVE-2020-4060

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