Out-of-bounds Read in Apple Iphone OS
CVE-2016-1839
The xmlDictAddString function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted XML document.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.073 (94.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.073 · newest: 0.073 · change: 0.000
Affected products
- Apple Iphone OS
- Apple Mac OS X
- Apple tvOS
- Apple watchOS
- Mcafee Web Gateway
- Xmlsoft Libxml2
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- Debian Linux — versions 8.0
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 6.0, 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html (Third Party Advisory)
- kc.mcafee.com/corporate/index (Patch, Third Party Advisory)
- access.redhat.com/errata/RHSA-2016:1292 (vendor-advisory, Third Party Advisory)
- bugzilla.gnome.org/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html (Third Party Advisory)
- support.apple.com/HT206567 (Vendor Advisory)
- www.securityfocus.com/bid/90691 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2016/dsa-3593 (vendor-advisory, Third Party Advisory)
- xmlsoft.org/news.html (Release Notes, Vendor Advisory)
- lists.apple.com/archives/security-announce/2016/May/msg00004.html (vendor-advisory, Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2016-1839?
- CVE-2016-1839 is a medium-severity vulnerability in Apple Iphone OS, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2016-05-20.
- How severe is CVE-2016-1839?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2016-1839 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.