SUSE-SU-2017:2744-1 Security update for xerces-j2

Not scored Published

An attacker can cause a denial of service in applications using the xerces-j2 library by providing XML with very long attribute names.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is SUSE-SU-2017:2744-1?

SUSE-SU-2017:2744-1 is a denial of service vulnerability in xerces-j2, published on 17 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

xerces-j2 was updated to fix several issues.

This security issue was fixed:

  • bsc#814241: Prevent possible DoS through very long attribute names

This non-security issue was fixed:

  • Prevent StackOverflowError when applying a pattern restriction on long strings while trying to validate an XML file against a schema (bsc#1047536, bsc#879138)

Which versions are affected by SUSE-SU-2017:2744-1?

Linux distribution packages (9)
xerces-j2 SUSE:Linux Enterprise Desktop 12 SP2All versions2.8.1-268.6.2
xerces-j2 SUSE:Linux Enterprise Desktop 12 SP3All versions2.8.1-268.6.2
xerces-j2 SUSE:Linux Enterprise Server 12 SP2All versions2.8.1-268.6.2
xerces-j2 SUSE:Linux Enterprise Server 12 SP3All versions2.8.1-268.6.2
xerces-j2 SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2All versions2.8.1-268.6.2
xerces-j2 SUSE:Linux Enterprise Server for SAP Applications 12 SP2All versions2.8.1-268.6.2
xerces-j2 SUSE:Linux Enterprise Server for SAP Applications 12 SP3All versions2.8.1-268.6.2
xerces-j2 SUSE:Linux Enterprise Software Development Kit 12 SP2All versions2.8.1-268.6.2
xerces-j2 SUSE:Linux Enterprise Software Development Kit 12 SP3All versions2.8.1-268.6.2

How do I fix SUSE-SU-2017:2744-1?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is SUSE-SU-2017:2744-1 being exploited?

There is no known exploitation of SUSE-SU-2017:2744-1 in the wild and no public exploit code.

Sources

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