Vulnerability Details : CVE-2018-7273
In the Linux kernel through 4.15.4, the floppy driver reveals the addresses of kernel functions and global variables using printk calls within the function show_floppy in drivers/block/floppy.c. An attacker can read this information from dmesg and use the addresses to find the locations of kernel code and data and bypass kernel security protections such as KASLR.
Vulnerability category: Information leak
Products affected by CVE-2018-7273
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-7273
0.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 53 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-7273
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:C/I:N/A:N |
3.9
|
6.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2018-7273
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-7273
-
https://lkml.org/lkml/2018/2/20/669
LKML: Brian Belleville: [PATCH] floppy: Don't print kernel addresses to log in show_floppyMailing List;Third Party Advisory
-
http://www.securityfocus.com/bid/103088
Linux Kernel 'drivers/block/floppy.c' Local Security Bypass VulnerabilityThird Party Advisory;VDB Entry
-
https://www.exploit-db.com/exploits/44325/
Linux Kernel < 4.15.4 - 'show_floppy' KASLR Address LeakExploit;Third Party Advisory;VDB Entry
Jump to