CVE-2020-1983— libslirp: use after free vulnerability cause a denial of service.
Quick assessment
Affected
slirp libslirp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
libslirp是一款用于在虚拟机管理程序中管理虚拟网络服务的通用TCP-IP模拟器。 libslirp 4.2.0及之前版本中的ip_input.c文件的‘ip_reass()’函数存在资源管理错误漏洞。攻击者可通过特制的数据包利用该漏洞导致拒绝服务。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-1983
Vulnerability Information
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Vulnerability Title
libslirp: use after free vulnerability cause a denial of service.
Source: CVE Program / CVE List V5
Vulnerability Description
A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
libslirp 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libslirp是一款用于在虚拟机管理程序中管理虚拟网络服务的通用TCP-IP模拟器。 libslirp 4.2.0及之前版本中的ip_input.c文件的‘ip_reass()’函数存在资源管理错误漏洞。攻击者可通过特制的数据包利用该漏洞导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2020-1983
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-1983 (2)
Mailing List Discussions for CVE-2020-1983 (6)
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http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00022.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00001.html vendor-advisory x_refsource_SUSE
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HWFD4MWV3YWIHVHSA2F7FKOLJFL4PHOX/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKT2MTSINE4NUPG5L6BYH6N23NBNITOL/ vendor-advisory x_refsource_FEDORA
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Other References for CVE-2020-1983 (2)
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https://gitlab.freedesktop.org/slirp/libslirp/-/issues/20 x_refsource_MISC
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V. Comments for CVE-2020-1983
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