PT-2017-3048
CVE-2017-1000363
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Published
2017-05-16
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Updated
2023-01-17
Description by
CVSS 3.1
7.8
HighMetricsAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions
Linux (affected versions not specified)
Description
The issue is caused by a missing bounds check in the Linux kernel, specifically in the drivers/char/lp.c file. This allows an adversary with partial control over the kernel command line, potentially due to bootloader vulnerabilities, to overflow the parport nr array by appending multiple 'lp=none' arguments. The vulnerability can be exploited to cause a denial of service.
Recommendations
For Linux, consider disabling the
lp setup() function as a temporary workaround until a patch is available.
Restrict access to the parport nr array to minimize the risk of exploitation.
Avoid using the lp=none argument in the kernel command line until the issue is resolved.
At the moment, there is no information about a newer version that contains a fix for this vulnerability. Found an issue in the description? Have something to add? Feel free to write us 👾