CVE-2016-4449
XML external entity (XXE) vulnerability in the xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.4, when not in validating mode, allows context-dependent attackers to read arbitrary files or cause a denial of service (resource…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
XML external entity (XXE) vulnerability in the xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.4, when not in validating mode, allows context-dependent attackers to read arbitrary files or cause a denial of service (resource consumption) via unspecified vectors.
- CVSS 3.0
- 7.1 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
- EPSS
- 1.66% probability · 75th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- debian/debian linux · canonical/ubuntu linux · xmlsoft/libxml2
- Source
- secalert@redhat.com
References
- http://jvn.jp/en/jp/JVN17535578/index.html
- http://jvndb.jvn.jp/en/contents/2017/JVNDB-2017-000066.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00005.html
- http://rhn.redhat.com/errata/RHSA-2016-2957.html
- http://www.openwall.com/lists/oss-security/2016/05/25/2
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/90865
- http://www.securitytracker.com/id/1036348
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.404722
- http://www.ubuntu.com/usn/USN-2994-1
- http://xmlsoft.org/news.html
- https://access.redhat.com/errata/RHSA-2016:1292
- https://git.gnome.org/browse/libxml2/commit/?id=b1d34de46a11323fccffa9fadeb33be670d602f5Vendor Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05194709
- https://kc.mcafee.com/corporate/index?page=content&id=SB10170
- https://support.apple.com/HT206899
- https://support.apple.com/HT206901
- https://support.apple.com/HT206902
- https://support.apple.com/HT206903
- https://support.apple.com/HT206904
- https://support.apple.com/HT206905
- https://support.cybozu.com/ja-jp/article/9735
- https://www.debian.org/security/2016/dsa-3593
- https://www.tenable.com/security/tns-2016-18
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.