CVE-2014-9527 Loop with Unreachable Exit Condition in Apache POI

What is CVE-2014-9527?

CVE-2014-9527 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 6 Jan 2015. 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

HSLFSlideShow in Apache POI before 3.11 allows remote attackers to cause a denial of service (infinite loop and deadlock) via a crafted PPT file.

Weakness: CWE-399

Which versions are affected by CVE-2014-9527?

2 open source packages ship an affected version, including org.apache.poi:poi. It affects 2 products.

Products include Apache Poi, Fedoraproject Fedora.

How do I fix CVE-2014-9527?

Upgrade org.apache.poi:poi to 3.11 or later.

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

Is CVE-2014-9527 being exploited?

There is no known exploitation of CVE-2014-9527 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2017-12626 Denial of Service in Apache POI High 7.5
• CVE-2022-26336 A carefully crafted TNEF file can cause an out of memory exception Medium 5.5
• CVE-2019-12415 Improper Restriction of XML External Entity Reference in Apache POI Medium 5.5
• CVE-2017-5644 Improper Restriction of Recursive Entity References in DTDs in Apache POI Medium 5.5
• CVE-2016-5000 Apache POI's XLSX2CSV Example XML External Entity (XXE) Vulnerability Medium 5.5

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2014-9527, GHSA-x9mm-6gpf-f749, MGASA-2015-0087, UBUNTU-CVE-2014-9527.