Ubuntu Security Notice 4917-1 - It was discovered that the overlayfs implementation in the Linux kernel did not properly validate the application of file system capabilities with respect to user namespaces. A local attacker could use this to gain elevated privileges. Vincent Dehors discovered that the shiftfs file system in the Ubuntu Linux kernel did not properly handle faults in copy_from_user when passing through ioctls to an underlying file system. A local attacker could use this to cause a denial of service or execute arbitrary code. Various other issues were also addressed.
0960410ba7e6e4040775aa7d07813ed851354f20fef02f6247a7d3b53d08796aGetSimple CMS My SMTP Contact plugin versions 1.1.1 and below cross site request forgery to remote code execution exploit.
2258d141aff440b13bbfd4362d347becfdafdef8d0b55521c249b9ab20702509Ubuntu Security Notice 4916-1 - It was discovered that the overlayfs implementation in the Linux kernel did not properly validate the application of file system capabilities with respect to user namespaces. A local attacker could use this to gain elevated privileges. Piotr Krysiuk discovered that the BPF JIT compiler for x86 in the Linux kernel did not properly validate computation of branch displacements in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
731316af4af43b6a4f4a4888d410c88049b391c7650608ca1fd2ed0566f0f141glFTPd version 2.11a remote denial of service exploit.
351da6c56260300af1e5df490cf3b54446f2d9367218bbda9ad708d0df9d90b2Ubuntu Security Notice 4915-1 - It was discovered that the overlayfs implementation in the Linux kernel did not properly validate the application of file system capabilities with respect to user namespaces. A local attacker could use this to gain elevated privileges. Vincent Dehors discovered that the shiftfs file system in the Ubuntu Linux kernel did not properly handle faults in copy_from_user when passing through ioctls to an underlying file system. A local attacker could use this to cause a denial of service or execute arbitrary code. Various other issues were also addressed.
2b1839252b77d24d87a54b70638bd57f0a4ba7b2d54f60cbe703b38834363ae317 bytes small Linux/x86 execve(/bin/sh) shellcode.
0d57e5917177f7b2c8c614412ee8c4d46b75b72f8a5547e97bce99f62fabc11121 bytes small Linux/x64 execve(/bin/sh) shellcode.
7640bb0b2bdd99b08b0876002140a299d855d4c3abe7f76eb8c7c4c0c63ed8bd
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