CVE-2016-3709 Cross-site scripting in libxml2

Medium 6.1 Published Updated

A cross-site scripting vulnerability in libxml2 allows attackers to inject malicious scripts into web pages viewed by other users.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2016-3709?

CVE-2016-3709 is a medium-severity cross-site scripting vulnerability in Xmlsoft Libxml2, published on 28 Jul 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Possible cross-site scripting vulnerability in libxml after commit 960f0e2.

Weakness: CWE-79

Which versions are affected by CVE-2016-3709?

It affects 1 product.

Linux distribution packages (22)
libxml2 AlmaLinux:8All versions2.9.7-15.el8
libxml2-devel AlmaLinux:8All versions2.9.7-15.el8
python3-libxml2 AlmaLinux:8All versions2.9.7-15.el8
libxml2-debuginfo Red Hat:enterprise_linux:8::appstreamAll versions0:2.9.7-15.el8
libxml2-debugsource Red Hat:enterprise_linux:8::appstreamAll versions0:2.9.7-15.el8
libxml2-devel Red Hat:enterprise_linux:8::appstreamAll versions0:2.9.7-15.el8
python3-libxml2-debuginfo Red Hat:enterprise_linux:8::appstreamAll versions0:2.9.7-15.el8
libxml2 Red Hat:enterprise_linux:8::baseosAll versions0:2.9.7-15.el8
libxml2-debuginfo Red Hat:enterprise_linux:8::baseosAll versions0:2.9.7-15.el8
libxml2-debugsource Red Hat:enterprise_linux:8::baseosAll versions0:2.9.7-15.el8
python3-libxml2 Red Hat:enterprise_linux:8::baseosAll versions0:2.9.7-15.el8
python3-libxml2-debuginfo Red Hat:enterprise_linux:8::baseosAll versions0:2.9.7-15.el8
libxml2-debuginfo Red Hat:rhel_eus:8.6::appstreamAll versions0:2.9.7-13.el8_6.2
libxml2-debugsource Red Hat:rhel_eus:8.6::appstreamAll versions0:2.9.7-13.el8_6.2
libxml2-devel Red Hat:rhel_eus:8.6::appstreamAll versions0:2.9.7-13.el8_6.2
python3-libxml2-debuginfo Red Hat:rhel_eus:8.6::appstreamAll versions0:2.9.7-13.el8_6.2
libxml2 Red Hat:rhel_eus:8.6::baseosAll versions0:2.9.7-13.el8_6.2
libxml2-debuginfo Red Hat:rhel_eus:8.6::baseosAll versions0:2.9.7-13.el8_6.2
libxml2-debugsource Red Hat:rhel_eus:8.6::baseosAll versions0:2.9.7-13.el8_6.2
python3-libxml2 Red Hat:rhel_eus:8.6::baseosAll versions0:2.9.7-13.el8_6.2
python3-libxml2-debuginfo Red Hat:rhel_eus:8.6::baseosAll versions0:2.9.7-13.el8_6.2
libxml2 Rocky Linux:8All versions0:2.9.7-15.el8

Products include Xmlsoft Libxml2.

How do I fix CVE-2016-3709?

Apply the vendor's patch.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2016-3709 being exploited?

There is no known exploitation of CVE-2016-3709 in the wild and no public exploit code.

All Xmlsoft Libxml2 vulnerabilities

Sources

Also known as ALPINE-CVE-2016-3709, ALSA-2022:7715, AZL-10442, CLSA-2022-1667512639, CLSA-2022-1668701552, CLSA-2022-1668701633 and 11 more.

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