CVE-2018-6551

2018-02-0200:00:00

ubuntu.com

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.003 Low

EPSS

Percentile

65.9%

JSON

The malloc implementation in the GNU C Library (aka glibc or libc6), from
version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not
properly handle malloc calls with arguments close to SIZE_MAX and could
return a pointer to a heap region that is smaller than requested,
eventually leading to heap corruption.