CVE-2015-8983
Published: 31 December 2015
Integer overflow in the _IO_wstr_overflow function in libio/wstrops.c in the GNU C Library (aka glibc or libc6) before 2.22 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors related to computing a size in bytes, which triggers a heap-based buffer overflow.
From the Ubuntu Security Team
It was discovered that an integer overflow existed in the _IO_wstr_overflow() function of the GNU C Library. An attacker could use this to cause a denial of service or possibly execute arbitrary code.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
eglibc Launchpad, Ubuntu, Debian |
precise |
Released
(2.15-0ubuntu10.16)
|
| trusty |
Released
(2.19-0ubuntu6.10)
|
|
| upstream |
Needs triage
|
|
| 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 |
Released
(2.22)
|
|
| xenial |
Not vulnerable
(2.23-0ubuntu3)
|
|
| yakkety |
Not vulnerable
(2.23-0ubuntu3)
|
|
| zesty |
Not vulnerable
(2.23-0ubuntu3)
|
|
|
Patches: upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bdf1ff052a8e23d637f2c838fa5642d78fcedc33 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.1 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |