CVE-2020-11742
Quick assessment
Affected
n/a n/a
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.
Xen是英国剑桥大学的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen 4.13.x及之前版本中存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。
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I. Basic Information for CVE-2020-11742
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of bad continuation handling in GNTTABOP_copy. Grant table operations are expected to return 0 for success, and a negative number for errors. The fix for CVE-2017-12135 introduced a path through grant copy handling where success may be returned to the caller without any action taken. In particular, the status fields of individual operations are left uninitialised, and may result in errant behaviour in the caller of GNTTABOP_copy. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to copy a grant, it hits the incorrect exit path. This returns success to the caller without doing anything, which may cause crashes or other incorrect behaviour.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Xen 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xen是英国剑桥大学的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen 4.13.x及之前版本中存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
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II. Public POCs for CVE-2020-11742
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-11742 (2)
Mailing List Discussions for CVE-2020-11742 (5)
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http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.html vendor-advisory x_refsource_SUSE
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2/ vendor-advisory x_refsource_FEDORA
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Other References for CVE-2020-11742 (2)
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http://xenbits.xen.org/xsa/advisory-318.html x_refsource_CONFIRM
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https://xenbits.xen.org/xsa/advisory-318.html x_refsource_MISC
Same Patch Batch · n/a · 2020-04-14 · 32 CVEs total
| CVE-2020-10382 | MB CONNECT LINE mymbCONNECT24和mbCONNECT24 安全漏洞 | |
| CVE-2020-11739 | Xen 竞争条件问题漏洞 | |
| CVE-2020-11740 | Xen 信息泄露漏洞 | |
| CVE-2020-11741 | Xen 安全漏洞 | |
| CVE-2020-11743 | Xen 安全漏洞 | |
| CVE-2020-5738 | Grandstream GXP1600 后置链接漏洞 | |
| CVE-2020-5739 | Grandstream GXP1600 代码注入漏洞 | |
| CVE-2020-9460 | Octech Oempro 跨站脚本漏洞 | |
| CVE-2020-9461 | Octech Oempro 跨站脚本漏洞 | |
| CVE-2020-9004 | Wowza Media Systems Streaming Engine 访问控制错误漏洞 | |
| CVE-2020-7958 | OnePlus 7 Pro 信息泄露漏洞 | |
| CVE-2019-16879 | Synergy Systems & Solutions HUSKY RTU 6049-E70 访问控制错误漏洞 | |
| CVE-2020-7800 | Synergy Systems & Solutions HUSKY RTU 6049-E70 代码问题漏洞 | |
| CVE-2020-7801 | Synergy Systems & Solutions HUSKY RTU 6049-E70 信息泄露漏洞 | |
| CVE-2020-7802 | Synergy Systems & Solutions HUSKY RTU 6049-E70 安全漏洞 | |
| CVE-2020-10381 | MB CONNECT LINE mymbCONNECT24和mbCONNECT24 SQL注入漏洞 | |
| CVE-2020-11758 | Industrial Light and Magic OpenEXR 缓冲区错误漏洞 | |
| CVE-2020-10383 | MB CONNECT LINE mymbCONNECT24和mbCONNECT24 安全漏洞 | |
| CVE-2020-10384 | MB CONNECT LINE mymbCONNECT24 安全漏洞 | |
| CVE-2019-18822 | ZOOM Call Recording 安全漏洞 |
Showing top 20 of 32 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2020-11742
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