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CVE-2018-1095

Status Candidate

Overview

The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.

Related Files

Red Hat Security Advisory 2019-2101-01
Posted Aug 6, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-2101-01 - The exiv2 packages provide a command line utility which can display and manipulate image metadata such as EXIF, LPTC, and JPEG comments. Issues addressed include denial of service, heap overflow, and null pointer vulnerabilities.

tags | advisory, denial of service, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2017-17724, CVE-2018-10772, CVE-2018-10958, CVE-2018-10998, CVE-2018-11037, CVE-2018-12264, CVE-2018-12265, CVE-2018-14046, CVE-2018-17282, CVE-2018-17581, CVE-2018-18915, CVE-2018-19107, CVE-2018-19108, CVE-2018-19535, CVE-2018-19607, CVE-2018-20096, CVE-2018-20097, CVE-2018-20098, CVE-2018-20099, CVE-2018-8976, CVE-2018-8977, CVE-2018-9305
MD5 | b48a8fb599269fd3b4f89cae92e38d67
Gentoo Linux Security Advisory 201811-14
Posted Nov 25, 2018
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201811-14 - Multiple vulnerabilities have been found in Exiv2, the worst of which could result in a Denial of Service condition. Versions less than 0.26_p20180811-r3 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2017-17723, CVE-2017-17724, CVE-2018-10780, CVE-2018-10958, CVE-2018-10998, CVE-2018-10999, CVE-2018-11037, CVE-2018-11531, CVE-2018-12264, CVE-2018-12265, CVE-2018-5772, CVE-2018-8976, CVE-2018-8977, CVE-2018-9144, CVE-2018-9145, CVE-2018-9146, CVE-2018-9303, CVE-2018-9304, CVE-2018-9305, CVE-2018-9306
MD5 | 023dbb50bd8ff7c00d31aa2fd55f3b56
Red Hat Security Advisory 2018-2948-01
Posted Oct 31, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-2948-01 - The kernel-alt packages provide the Linux kernel version 4.x. Issues addressed include buffer overflow, bypass, denial of service, information leakage, null pointer, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2017-13166, CVE-2017-16648, CVE-2017-17805, CVE-2017-17806, CVE-2017-18075, CVE-2017-18208, CVE-2017-18344, CVE-2018-1000026, CVE-2018-1000200, CVE-2018-1000204, CVE-2018-10322, CVE-2018-1065, CVE-2018-1068, CVE-2018-10877, CVE-2018-10878, CVE-2018-10879, CVE-2018-10880, CVE-2018-10881, CVE-2018-10882, CVE-2018-10883, CVE-2018-1092, CVE-2018-1094, CVE-2018-10940, CVE-2018-1095, CVE-2018-1118, CVE-2018-1120
MD5 | 2a082c96c14fb8589f9da34adecaa49d
Ubuntu Security Notice USN-3718-2
Posted Jul 23, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3718-2 - USN-3695-2 fixed vulnerabilities in the Linux Hardware Enablement Kernel kernel for Ubuntu 16.04 LTS. Unfortunately, the fix for CVE-2018-1108 introduced a regression where insufficient early entropy prevented services from starting, leading in some situations to a failure to boot, This update addresses the issue. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-1094, CVE-2018-10940, CVE-2018-1095, CVE-2018-1108, CVE-2018-11508, CVE-2018-7755
MD5 | 95f3ed15f6f677f3916eddf77606b2be
Ubuntu Security Notice USN-3718-1
Posted Jul 23, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3718-1 - USN-3695-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. Unfortunately, the fix for CVE-2018-1108 introduced a regression where insufficient early entropy prevented services from starting, leading in some situations to a failure to boot, This update addresses the issue. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-1094, CVE-2018-10940, CVE-2018-1095, CVE-2018-1108, CVE-2018-11508, CVE-2018-7755
MD5 | 89afcc71542e7f35797e8836a45c4aa9
Debian Security Advisory 4238-1
Posted Jul 3, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4238-1 - Several vulnerabilities have been discovered in Exiv2, a C++ library and a command line utility to manage image metadata which could result in denial of service or the execution of arbitrary code if a malformed file is parsed.

tags | advisory, denial of service, arbitrary, vulnerability
systems | linux, debian
advisories | CVE-2018-10958, CVE-2018-10998, CVE-2018-10999, CVE-2018-11531, CVE-2018-12264, CVE-2018-12265
MD5 | a420d05080680430bf4d1bf954fb1cfb
Ubuntu Security Notice USN-3700-1
Posted Jul 3, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3700-1 - It was discovered that Exiv2 incorrectly handled certain files. An attacker could possibly use this to cause a denial of service. It was discovered that Exiv2 incorrectly handled certain PNG files. An attacker could possibly use this to access sensitive information. It was discovered that Exiv2 incorrectly handled certain files. An attacker could possibly use this to execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-10958, CVE-2018-10998, CVE-2018-10999, CVE-2018-11531, CVE-2018-12264, CVE-2018-12265
MD5 | f90e6188ca493c98ad04b286dcdd3824
Ubuntu Security Notice USN-3695-1
Posted Jul 2, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3695-1 - Wen Xu discovered that the ext4 file system implementation in the Linux kernel did not properly initialize the crc32c checksum driver. A local attacker could use this to cause a denial of service. It was discovered that the cdrom driver in the Linux kernel contained an incorrect bounds check. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2018-1094, CVE-2018-10940, CVE-2018-1095, CVE-2018-11508, CVE-2018-7755
MD5 | 1ab8575ad708cdc9ce2f92f0db75ae9f
Ubuntu Security Notice USN-3695-2
Posted Jul 2, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3695-2 - USN-3695-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS. Wen Xu discovered that the ext4 file system implementation in the Linux kernel did not properly initialize the crc32c checksum driver. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-1094, CVE-2018-10940, CVE-2018-1095, CVE-2018-11508, CVE-2018-7755
MD5 | 6208e9e136bfff7fc82ca98b30f85bda
IPConfigure Orchid VMS 2.0.5 Directory Traversal / Information Disclosure
Posted Jun 21, 2018
Authored by Sanjiv Kawa | Site metasploit.com

Orchid Core VMS is vulnerable to a directory traversal attack. This affects Linux and Windows operating systems. This allows a remote, unauthenticated attacker to send crafted GET requests to the application, which results in the ability to read arbitrary files outside of the applications web directory. This issue is further compounded as the Linux version of Orchid Core VMS application is running in context of a user in the sudoers group. As such, any file on the underlying system, for which the location is known, can be read. This Metasploit module was tested against 2.0.5. This has been fixed in 2.0.6.

tags | exploit, remote, web, arbitrary, file inclusion
systems | linux, windows
advisories | CVE-2018-10956
MD5 | 3e04a3dc073e0a19729151e34ab842cb
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