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I. Basic Information for CVE-2017-1000112
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 ("[IPv4/IPv6]: UFO Scatter-gather approach") on Oct 18 2005.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
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中存在本地内存损坏漏洞。本地攻击者可利用该漏洞在应用程序的上下文中以root权限执行任意代码，损坏内核内存，或造成拒绝服务。
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
VendorProductAffected VersionsCPESubscribe
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II. Public POCs for CVE-2017-1000112
#POC DescriptionSource LinkShenlong Link
1Escape from Docker using CVE-2017-1000112 and CVE-2017-18344, including gaining root privilage, get all capbilities, namespace recovery, filesystem recovery, cgroup limitation bypass and seccomp bypass.https://github.com/hikame/docker_escape_pwnPOC Details
2POE code for CVE-2017-1000112 adapted to both funtion on a specific VM and Escape a Dockerhttps://github.com/ol0273st-s/CVE-2017-1000112-AdpatedPOC Details
3Exploit work Privilege Escalation CVE-2017-1000112https://github.com/IT19083124/SNP-AssignmentPOC Details
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III. Intelligence Information for CVE-2017-1000112
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IV. Related Vulnerabilities
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Same vendor: n/a
V. Comments for CVE-2017-1000112

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