CVE-2016-4658

high-risk
Published 2016-09-25

xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document.

Do I need to act?

!
17.7% chance of exploitation in next 30 days
EPSS score — higher than 82% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Xmlsoft Apple

References (26)

Mailing List http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
Mailing List http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
Mailing List http://lists.apple.com/archives/security-announce/2016/Sep/msg00010.html
Mailing List http://lists.apple.com/archives/security-announce/2016/Sep/msg00011.html
Third Party Advisory http://www.securityfocus.com/bid/93054
Third Party Advisory http://www.securitytracker.com/id/1036858
Third Party Advisory http://www.securitytracker.com/id/1038623
Patch https://git.gnome.org/browse/libxml2/commit/?id=c1d1f7121194036608bf555f08d3062a...
Third Party Advisory https://security.gentoo.org/glsa/201701-37
Vendor Advisory https://support.apple.com/HT207141
Vendor Advisory https://support.apple.com/HT207142
Vendor Advisory https://support.apple.com/HT207143
Vendor Advisory https://support.apple.com/HT207170
Mailing List http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
Mailing List http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
Mailing List http://lists.apple.com/archives/security-announce/2016/Sep/msg00010.html
Mailing List http://lists.apple.com/archives/security-announce/2016/Sep/msg00011.html
Third Party Advisory http://www.securityfocus.com/bid/93054
Third Party Advisory http://www.securitytracker.com/id/1036858
Third Party Advisory http://www.securitytracker.com/id/1038623
and 6 more references
57
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 13/34 · Low
Exposure 12/34 · Low