CVE-2016-4483

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-04-11 · updated 2026-06-17
Weakness: CWE-502

Description

The xmlBufAttrSerializeTxtContent function in xmlsave.c in libxml2 allows context-dependent attackers to cause a denial of service (out-of-bounds read and application crash) via a non-UTF-8 attribute value, related to serialization. NOTE: this vulnerability may be a duplicate of CVE-2016-3627.

Affected products

Debian Linux: 8.0
Oracle Corporation Solaris Operating System: 11.3
xmlsoft libxml2: before 2.9.4 — fixed in 2.9.4

How to fix

Upgrade to a fixed version: xmlsoft libxml2 2.9.4. Check the vendor advisory for mitigations.

References

http://rhn.redhat.com/errata/RHSA-2016-2957.html
http://www.debian.org/security/2016/dsa-3593
http://www.openwall.com/lists/oss-security/2016/05/03/8
http://www.openwall.com/lists/oss-security/2016/05/04/7
http://www.openwall.com/lists/oss-security/2016/06/07/4
http://www.openwall.com/lists/oss-security/2016/06/07/5
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://www.securityfocus.com/bid/90013
http://www.securitytracker.com/id/1036348
https://git.gnome.org/browse/libxml2/commit/?id=c97750d11bb8b6f3303e7131fe526a61ac65bcfd
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E

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