CVE-2017-9049 Memory corruption in n/a
A heap-based buffer over-read in libxml2 allows attackers to cause a denial of service via crafted XML input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-9049?
CVE-2017-9049 is a high-severity memory corruption vulnerability in Xmlsoft Libxml2, published on 18 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398.
Weakness: CWE-125
Which versions are affected by CVE-2017-9049?
It affects 1 product.
Products include Xmlsoft Libxml2.
How do I fix CVE-2017-9049?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-9049 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-9049 exists.
Other vulnerabilities in Xmlsoft Libxml2
Sources
Also known as DEBIAN-CVE-2017-9049, ECHO-6b5e-c3a3-abe9, GHSA-rv68-c8wr-h3m5, UBUNTU-CVE-2017-9049.