PT-2017-3733 · Linux+3 · Linux Kernel+3
Stefano Brivio
·
Published
2017-08-23
·
Updated
2023-02-12
·
CVE-2017-7558
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:C/I:N/A:N |
Name of the Vulnerable Software and Affected Versions:
Linux kernel versions 4.7-rc1 through 4.13
Description:
A kernel data leak was found due to an out-of-bound read in the Linux kernel. This issue affects the inet diag msg sctp{,l}addr fill() and sctp get sctp info() functions, where a data leak occurs when filling in sockaddr data structures used for exporting socket's diagnostic information. As a result, up to 100 bytes of slab data could be leaked to userspace. The vulnerability can be exploited by a local attacker to cause a memory leak.
Recommendations:
For Linux kernel versions 4.7-rc1 through 4.13, consider disabling the
inet diag msg sctp{,l}addr fill() and sctp get sctp info() functions as a temporary workaround until a patch is available. Restrict access to the vulnerable functions to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Buffer Overflow
Out of bounds Read
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Related Identifiers
Affected Products
Alt Linux
Centos
Linux Kernel
Red Hat