ArchLinuxASA-201810-3[ASA-201810-3] libxml2: denial of service
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
2.6 Low
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:N/I:N/A:P
0.002 Low
EPSS
Percentile
52.2%
Arch Linux Security Advisory ASA-201810-3
Severity: Medium
Date : 2018-10-01
CVE-ID : CVE-2018-9251
Package : libxml2
Type : denial of service
Remote : Yes
Link : https://security.archlinux.org/AVG-672
Summary
The package libxml2 before version 2.9.8-5 is vulnerable to denial of
service.
Resolution
Upgrade to 2.9.8-5.
pacman -Syu “libxml2>=2.9.8-5”
The problem has been fixed upstream but no release is available yet.
Workaround
None.
Description
A security issue has been found in libxml2 <= 2.9.8 compiled with LZMA
support enabled, in the xz_decomp function in xzlib.c. This flaw allows
a remote attacker to cause a denial of service via an infinite loop,
using a crafted XML payload that triggers LZMA_MEMLIMIT_ERROR.
Impact
A remote attacker is able to cause a denial of service by parsing a
specially crafted XML payload.
References
https://bugzilla.gnome.org/show_bug.cgi?id=794914
https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74
https://security.archlinux.org/CVE-2018-9251
Related
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
2.6 Low
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:H/Au:N/C:N/I:N/A:P
0.002 Low
EPSS
Percentile
52.2%