Linux (Ubuntu) - Other Users coredumps Can Be Read via setgid Directory and killpriv Bypass

/ Note: I am both sending this bug report to [email protected] and filing it in the Ubuntu bugtracker because I can't tell whether this counts as a kernel bug or as a Ubuntu bug. You may wish to talk to each other to determine the best place to fix this. I noticed halfdog's old writeup at...

Linux #Ubuntu Coredump Reading Access Bypass Vulnerability

Linux/Ubuntu suffers from a vulnerability where other users' coredumps can be read via a setgid directory and killpriv bypass. Linux/Ubuntu: other users' coredumps can be read via setgid directory and killpriv bypass Note: I am both sending this bug report to email protected and filing it in the...

Linux/Ubuntu Coredump Reading Access Bypass

Linux/Ubuntu: other users' coredumps can be read via setgid directory and killpriv bypass Note: I am both sending this bug report to [email protected] and filing it in the Ubuntu bugtracker because I can't tell whether this counts as a kernel bug or as a Ubuntu bug. You may wish to talk to each...

DEBIAN-CVE-2018-13405

The inodeinitowner function in fs/inode.c in the Linux kernel through 3.16 allows local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigge...

Security Bulletin: SetGID and SetUID programs in IBM Workload Scheduler can be exploited to obtain privilege escalation (CVE-2018-1386)

Summary SetGID and SetUID programs in IBM Workload Scheduler can be exploited to obtain root privileges Vulnerability Details Some programs in IBM Workload Scheduler are executed with elevated privileges SetGID and SetUID programs and have been compiled to search for libraries in an insecure...

openSUSE Security Update : libdb-4_8 (openSUSE-2018-199)

This update for libdb-48 fixes the following issues : - A DBCONFIG file in the current working directory allowed local users to obtain sensitive information via a symlink attack involving a setgid or setuid application using libdb-48. bsc1043886 This update was imported from the SUSE:SLE-12:Updat...

openSUSE Security Update : libdb-4_5 (openSUSE-2018-200)

This update for libdb-45 fixes the following issues : - A DBCONFIG file in the current working directory allowed local users to obtain sensitive information via a symlink attack involving a setgid or setuid application using libdb-45. bsc1043886 %NASLMINLEVEL 70300 C Tenable Network Security, Inc...

SUSE-SU-2018:0510-1 Security update for libdb-4_8

This update for libdb-48 fixes the following issues: - A DBCONFIG file in the current working directory allowed local users to obtain sensitive information via a symlink attack involving a setgid or setuid application using libdb-48. bsc1043886...

SUSE SLES11 Security Update : libdb-4_5 (SUSE-SU-2018:0409-1)

This update for libdb-45 fixes the following issues : - A DBCONFIG file in the current working directory allowed local users to obtain sensitive information via a symlink attack involving a setgid or setuid application using libdb-48. bsc1043886 Note that Tenable Network Security has extracted th...

SUSE-SU-2018:0409-1 Security update for libdb-4_5

This update for libdb-45 fixes the following issues: - A DBCONFIG file in the current working directory allowed local users to obtain sensitive information via a symlink attack involving a setgid or setuid application using libdb-48. bsc1043886...

Linux/x86 - setuid(0) + setgid(0) + execve(/bin/sh,[/bin/sh,NULL])) Shellcode (25 bytes)

include const char shellcode= "\x6a\x17" // push $0x17 "\x58" // pop %eax "\x31\xdb" // xor %ebx,%ebx "\xcd\x80" // int $0x80 "\xb0\x2e" // mov $0x2e,%al "\xcd\x80" // int $0x80 "\xb0\x0b" // mov $0xb,%al So you'll get segfault if it's not able to do the setuid0. If you don't want this you can...

Debian: Security Advisory (DLA-876-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2018 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

F5 Networks BIG-IP : Linux kernel vulnerability (K31603170)

The filesystem implementation in the Linux kernel through 4.8.2 preserves the setgid bit during a setxattr call, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. CVE-2016-7097 Impact A local user may be...

Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3422-1)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3422-1 advisory. It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically...

USN-3422-2: Linux kernel (Trusty HWE) vulnerabilities

USN-3422-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 LTS. It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux...

USN-3422-1: Linux kernel vulnerabilities

It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service system crash. CVE-2017-1000251 It was discovered that the asynchronous I/O aio...

USN-3422-1 linux vulnerabilities

It was discovered that a buffer overflow existed in the Bluetooth stack of the Linux kernel when handling L2CAP configuration responses. A physically proximate attacker could use this to cause a denial of service system crash. CVE-2017-1000251 It was discovered that the asynchronous I/O aio...

kernel: S_ISGD is not cleared when setting posix ACLs in tmpfs (CVE-2016-7097 incomplete fix)

A vulnerability was found in the Linux kernel in 'tmpfs' file system. When file permissions are modified via 'chmod' and the user is not in the owning group or capable of CAPFSETID, the setgid bit is cleared in inodechangeok. Setting a POSIX ACL via 'setxattr' sets the file permissions as well as...

kernel: Setting a POSIX ACL via setxattr doesn't clear the setgid bit

It was found that when file permissions were modified via chmod and the user modifying them was not in the owning group or capable of CAPFSETID, the setgid bit would be cleared. Setting a POSIX ACL via setxattr sets the file permissions as well as the new ACL, but doesn't clear the setgid bit in ...

kernel: Setting a POSIX ACL via setxattr doesn't clear the setgid bit

It was found that when file permissions were modified via chmod and the user modifying them was not in the owning group or capable of CAPFSETID, the setgid bit would be cleared. Setting a POSIX ACL via setxattr sets the file permissions as well as the new ACL, but doesn't clear the setgid bit in ...