CVE-2020-10711
Quick assessment
Affected
Red Hat Kernel
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.
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 5.7之前版本中的SELinux子系统中存在代码问题漏洞。远程攻击者可利用该漏洞使系统内核崩溃，从而导致拒绝服务。
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I. Basic Information for CVE-2020-10711
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A NULL pointer dereference flaw was found in the Linux kernel's SELinux subsystem in versions before 5.7. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. While processing the CIPSO restricted bitmap tag in the 'cipso_v4_parsetag_rbm' routine, it sets the security attribute to indicate that the category bitmap is present, even if it has not been allocated. This issue leads to a NULL pointer dereference issue while importing the same category bitmap into SELinux. This flaw allows a remote network user to crash the system kernel, resulting in a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 5.7之前版本中的SELinux子系统中存在代码问题漏洞。远程攻击者可利用该漏洞使系统内核崩溃，从而导致拒绝服务。
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-2020-10711
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Vendor Advisories for CVE-2020-10711 (8)
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https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10711 x_refsource_CONFIRM
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https://security.netapp.com/advisory/ntap-20200608-0001/ x_refsource_CONFIRM
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Mailing List Discussions for CVE-2020-10711 (4)
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https://www.openwall.com/lists/oss-security/2020/05/12/2 x_refsource_CONFIRM
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http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html vendor-advisory x_refsource_SUSE
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V. Comments for CVE-2020-10711
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