CVE-2018-9251 — MEDIUM (5.3)

Vulnerability Description

The xz_decomp function in xzlib.c in libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.

CVSS Score

5.3

MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Xmlsoft	Libxml2	2.9.8
Debian	Debian Linux	8.0

Related Weaknesses (CWE)

CWE-835

References

https://bugzilla.gnome.org/show_bug.cgi?id=794914ExploitIssue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00035.htmlThird Party Advisory
https://bugzilla.gnome.org/show_bug.cgi?id=794914ExploitIssue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00035.htmlThird Party Advisory

FAQ

What is CVE-2018-9251?

CVE-2018-9251 is a vulnerability with a CVSS score of 5.3 (MEDIUM). The xz_decomp function in xzlib.c in libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERRO...

How severe is CVE-2018-9251?

CVE-2018-9251 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-9251?

Check the references section above for vendor advisories and patch information. Affected products include: Xmlsoft Libxml2, Debian Debian Linux.