CVE-2015-8778
Published: 19 April 2016
Integer overflow in the GNU C Library (aka glibc or libc6) before 2.23 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via the size argument to the __hcreate_r function, which triggers out-of-bounds heap-memory access.
From the Ubuntu Security Team
Szabolcs Nagy discovered that the hcreate functions in the GNU C Library did not properly check its size argument, leading to an integer overflow. An attacker could use to cause a denial of service (application crash) or possibly execute arbitrary code.
Priority
Status
Package | Release | Status |
---|---|---|
eglibc Launchpad, Ubuntu, Debian |
precise |
Released
(2.15-0ubuntu10.14)
|
trusty |
Released
(2.19-0ubuntu6.8)
|
|
upstream |
Needed
|
|
vivid |
Does not exist
|
|
wily |
Does not exist
|
|
xenial |
Does not exist
|
|
yakkety |
Does not exist
|
|
zesty |
Does not exist
|
|
glibc Launchpad, Ubuntu, Debian |
precise |
Does not exist
|
trusty |
Does not exist
|
|
upstream |
Needed
|
|
vivid |
Ignored
(end of life)
|
|
wily |
Released
(2.21-0ubuntu4.2)
|
|
xenial |
Not vulnerable
(2.23-0ubuntu1)
|
|
yakkety |
Not vulnerable
(2.23-0ubuntu1)
|
|
zesty |
Not vulnerable
(2.23-0ubuntu1)
|
|
Patches: upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2f5c1750558fe64bac361f52d6827ab1bcfe52bc |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 9.8 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |