Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.
Source:
MITRE
Description Last Modified:
04/08/2018
View Analysis Description
Analysis Description
The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.
Source:
MITRE
Description Last Modified:
04/08/2018
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
6.5 MEDIUM
Vector:
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
(V3 legend)
Impact Score:
3.6
Exploitability Score:
2.8
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
Required
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
CVSS v2.0 Severity and Metrics:
Base Score:
4.3 MEDIUM
Vector:
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
(V2 legend)
Impact Subscore:
2.9
Exploitability Subscore:
8.6
Access Vector (AV):
Network
Access Complexity (AC):
Medium
Authentication (AU):
None
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
Partial
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows disruption of service
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Change History
3 change records found
- show changes
CVE Modified by MITRE -
9/28/2018 6:29:01 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html [No Types Assigned] |
CVE Modified by MITRE -
8/15/2018 6:29:01 AM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
https://usn.ubuntu.com/3739-1/ [No Types Assigned] |
Initial Analysis -
5/16/2018 2:38:26 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.6 |
| Added |
CVSS V2 |
|
(AV:N/AC:M/Au:N/C:N/I:N/A:P) |
| Added |
CVSS V2 Metadata |
|
Victim must voluntarily interact with attack mechanism |
| Added |
CVSS V3 |
|
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| Added |
CWE |
|
CWE-399 |
| Changed |
Reference Type |
https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bb No Types Assigned |
https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bb Patch, Vendor Advisory |