CVE-2016-3705
Published: 17 May 2016
The (1) xmlParserEntityCheck and (2) xmlParseAttValueComplex functions in parser.c in libxml2 2.9.3 do not properly keep track of the recursion depth, which allows context-dependent attackers to cause a denial of service (stack consumption and application crash) via a crafted XML document containing a large number of nested entity references.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
libxml2 Launchpad, Ubuntu, Debian |
precise |
Released
(2.7.8.dfsg-5.1ubuntu4.15)
|
| trusty |
Released
(2.9.1+dfsg1-3ubuntu4.8)
|
|
| upstream |
Released
(2.9.4)
|
|
| wily |
Released
(2.9.2+zdfsg1-4ubuntu0.4)
|
|
| xenial |
Released
(2.9.3+dfsg1-1ubuntu0.1)
|
|
| yakkety |
Not vulnerable
(2.9.3+dfsg1-1.2)
|
|
| zesty |
Not vulnerable
(2.9.3+dfsg1-1.2)
|
|
|
Patches: upstream: https://git.gnome.org/browse/libxml2/commit/?id=8f30bdff69edac9075f4663ce3b56b0c52d48ce6 |
||
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 |