CVE-2016-3705
The (1) xmlParserEntityCheck and (2) xmlParseAttValueComplex functions in parser.c in libxml2 2.9.3 do not properly keep track of the recursion depth, which allows context-dependent attackers to cause a denial of service (stack consumption and…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The (1) xmlParserEntityCheck and (2) xmlParseAttValueComplex functions in parser.c in libxml2 2.9.3 do not properly keep track of the recursion depth, which allows context-dependent attackers to cause a denial of service (stack consumption and application crash) via a crafted XML document containing a large number of nested entity references.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 5.10% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- canonical/ubuntu linux · xmlsoft/libxml2 · debian/debian linux · hp/icewall federation agent · hp/icewall file manager · opensuse/leap
- Source
- secalert@redhat.com
References
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00055.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00127.html
- http://rhn.redhat.com/errata/RHSA-2016-2957.html
- http://seclists.org/fulldisclosure/2016/May/10
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/89854
- http://www.ubuntu.com/usn/USN-2994-1
- https://access.redhat.com/errata/RHSA-2016:1292
- https://bugzilla.gnome.org/show_bug.cgi?id=765207
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157239
- https://kc.mcafee.com/corporate/index?page=content&id=SB10170
- https://security.gentoo.org/glsa/201701-37
- https://www.debian.org/security/2016/dsa-3593
- https://www.tenable.com/security/tns-2016-18
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00055.html
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00127.html
- http://rhn.redhat.com/errata/RHSA-2016-2957.html
- http://seclists.org/fulldisclosure/2016/May/10
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/89854
- http://www.ubuntu.com/usn/USN-2994-1
- https://access.redhat.com/errata/RHSA-2016:1292
- https://bugzilla.gnome.org/show_bug.cgi?id=765207
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157239
- https://kc.mcafee.com/corporate/index?page=content&id=SB10170
- https://security.gentoo.org/glsa/201701-37
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.