Vulnerability CVE-2017-18258
Published: 2018-04-08

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.

Type:

CWE-770

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Xmlsoft -> Libxml2 

 References:
https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bb
https://kc.mcafee.com/corporate/index?page=content&id=SB10284
https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html
https://security.netapp.com/advisory/ntap-20190719-0001/
https://usn.ubuntu.com/3739-1/
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