UBUNTU-CVE-2014-3660

parser.c in libxml2 before 2.9.2 does not properly prevent entity expansion even when entity substitution has been disabled, which allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted XML document containing a large number of nested entity references, a variant of the "billion laughs" attack.

References

Affected packages

Ubuntu:14.04:LTS / libxml2

Package

Name: libxml2
Purl: pkg:deb/ubuntu/libxml2@2.9.1+dfsg1-3ubuntu4.4?arch=source&distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.9.1+dfsg1-3ubuntu4.4

Affected versions

2.*

2.9.1+dfsg1-3ubuntu2

2.9.1+dfsg1-3ubuntu3

2.9.1+dfsg1-3ubuntu4

2.9.1+dfsg1-3ubuntu4.1

2.9.1+dfsg1-3ubuntu4.2

2.9.1+dfsg1-3ubuntu4.3

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libxml2",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.4"
        },
        {
            "binary_name": "libxml2-dbg",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.4"
        },
        {
            "binary_name": "libxml2-dev",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.4"
        },
        {
            "binary_name": "libxml2-doc",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.4"
        },
        {
            "binary_name": "libxml2-udeb",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.4"
        },
        {
            "binary_name": "libxml2-utils",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.4"
        },
        {
            "binary_name": "libxml2-utils-dbg",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.4"
        },
        {
            "binary_name": "python-libxml2",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.4"
        },
        {
            "binary_name": "python-libxml2-dbg",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.4"
        }
    ]
}