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Vulnerability Details : CVE-2018-1093

The ext4_valid_block_bitmap function in fs/ext4/balloc.c in the Linux kernel through 4.15.15 allows attackers to cause a denial of service (out-of-bounds read and system crash) via a crafted ext4 image because balloc.c and ialloc.c do not validate bitmap block numbers.
Publish Date : 2018-04-01 Last Update Date : 2018-08-29
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- CVSS Scores & Vulnerability Types

CVSS Score
7.1
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 125

- Products Affected By CVE-2018-1093

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 4.15.15 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1

- References For CVE-2018-1093

https://usn.ubuntu.com/3754-1/
UBUNTU USN-3754-1
https://www.debian.org/security/2018/dsa-4188
DEBIAN DSA-4188
https://usn.ubuntu.com/3752-2/
UBUNTU USN-3752-2
https://usn.ubuntu.com/3752-1/
UBUNTU USN-3752-1
https://bugzilla.redhat.com/show_bug.cgi?id=1560782
https://usn.ubuntu.com/3676-1/
UBUNTU USN-3676-1
https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
MLIST [debian-lts-announce] 20180714 [SECURITY] [DLA 1422-1] linux security update
https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html
MLIST [debian-lts-announce] 20180601 [SECURITY] [DLA 1392-1] linux security update
https://usn.ubuntu.com/3676-2/
UBUNTU USN-3676-2
http://openwall.com/lists/oss-security/2018/03/29/1
https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
MLIST [debian-lts-announce] 20180715 [SECURITY] [DLA 1422-2] linux security update
https://bugzilla.kernel.org/show_bug.cgi?id=199181
https://usn.ubuntu.com/3752-3/
UBUNTU USN-3752-3
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=7dac4a1726a9c64a517d595c40e95e2d0d135f6f

- Metasploit Modules Related To CVE-2018-1093

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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