CVE-2016-4539 Memory corruption in n/a
Remote attackers can cause a denial of service via crafted XML data triggering a buffer under-read and segmentation fault in the PHP XML parser.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-4539?
CVE-2016-4539 is a critical memory corruption vulnerability in Fedoraproject Fedora, published on 22 May 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The xml_parse_into_struct function in ext/xml/xml.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 allows remote attackers to cause a denial of service (buffer under-read and segmentation fault) or possibly have unspecified other impact via crafted XML data in the second argument, leading to a parser level of zero.
Weakness: CWE-119
Which versions are affected by CVE-2016-4539?
It affects 3 products.
Products include Fedoraproject Fedora, Opensuse Leap, Php Php.
How do I fix CVE-2016-4539?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2016-4539 being exploited?
There is no known exploitation of CVE-2016-4539 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as GHSA-649r-6cpm-mqpp, UBUNTU-CVE-2016-4539.