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osvGoogleOSV:DLA-508-1
HistoryJun 08, 2016 - 12:00 a.m.

expat - security update

2016-06-0800:00:00
Google
osv.dev
18

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.8 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

Two related issues have been discovered in Expat, a C library for
parsing XML.

  • CVE-2012-6702
    This issue was introduced when CVE-2012-0876 was addressed. Stefan
    Sørensen discovered that the use of the function XML_Parse() seeds
    the random number generator generating repeated outputs for rand()
    calls.
  • CVE-2016-5300
    This is the product of an incomplete solution for CVE-2012-0876. The
    parser poorly seeds the random number generator allowing an
    attacker to cause a denial of service (CPU consumption) via an XML
    file with crafted identifiers.

You might need to manually restart programs and services using expat
libraries.

For Debian 7 Wheezy, these problems have been fixed in version
2.1.0-1+deb7u4.

We recommend that you upgrade your expat packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: <https://wiki.debian.org/LTS&gt;

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.8 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C