Vulnerability Details : CVE-2018-14617
Potential exploit
An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
Vulnerability category: Memory Corruption
Products affected by CVE-2018-14617
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-14617
0.26%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-14617
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.1
|
HIGH | AV:N/AC:M/Au:N/C:N/I:N/A:C |
8.6
|
6.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2018-14617
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-14617
-
http://www.securityfocus.com/bid/104917
Linux Kernel Multiple Denial of Service VulnerabilitiesThird Party Advisory;VDB Entry
-
https://usn.ubuntu.com/4094-1/
USN-4094-1: Linux kernel vulnerabilities | Ubuntu security notices
-
https://usn.ubuntu.com/4118-1/
USN-4118-1: Linux kernel (AWS) vulnerabilities | Ubuntu security notices
-
https://www.debian.org/security/2018/dsa-4308
Debian -- Security Information -- DSA-4308-1 linuxThird Party Advisory
-
https://usn.ubuntu.com/3821-2/
USN-3821-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://bugzilla.kernel.org/show_bug.cgi?id=200297
200297 – Kernel panic in hfsplus_lookup() when open a file in a corrupted hfs+ filesystemExploit;Issue Tracking;Third Party Advisory
-
https://usn.ubuntu.com/3821-1/
USN-3821-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
[SECURITY] [DLA 1531-1] linux-4.9 security updateMailing List;Third Party Advisory
-
https://www.spinics.net/lists/linux-fsdevel/msg130021.html
[PATCH v2] hfsplus: fix NULL dereference in hfsplus_lookup() — Linux Filesystem DevelopmentIssue Tracking;Patch;Third Party Advisory
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