CVE-2017-1000112 PoC — Linux kernel 安全漏洞

Source

https://github.com/hikame/docker_escape_pwn

Associated Vulnerability

Title:Linux kernel 安全漏洞 (CVE-2017-1000112)
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.

Description

Escape 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.

Readme

Escape from Docker using CVE-2017-1000112 and CVE-2017-18344.
Including:
- gaining root privilage
- get all capbilities
- namespace recovery
- filesystem recovery
- cgroup limitation bypass
- seccomp bypass

File Snapshot

Remarks

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