CVE-2017-9048
Published: 18 May 2017
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. At the end of the routine, the function may strcat two more characters without checking whether the current strlen(buf) + 2 < size. This vulnerability causes programs that use libxml2, such as PHP, to crash.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
libxml2
Launchpad, Ubuntu, Debian |
trusty |
Released
(2.9.1+dfsg1-3ubuntu4.10)
|
| upstream |
Released
(2.9.4+dfsg1-3.1, 2.9.5)
|
|
| xenial |
Released
(2.9.3+dfsg1-1ubuntu0.3)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Released
(2.9.4+dfsg1-2.2ubuntu0.1)
|
|
|
Patches:
upstream: https://git.gnome.org/browse/libxml2/commit/?id=932cc9896ab41475d4aa429c27d9afd175959d74 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |