CVE-2017-5923 Denial of service in n/a
Remote attackers can crash the YARA application via a crafted rule, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-5923?
CVE-2017-5923 is a high-severity denial of service vulnerability in n/a, published on 3 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
libyara/grammar.y in YARA 3.5.0 allows remote attackers to cause a denial of service (heap-based out-of-bounds read and application crash) via a crafted rule that is mishandled in the yara_yyparse function.
Weakness: CWE-125
Which versions are affected by CVE-2017-5923?
It affects 1 product.
Products include Virustotal Yara.
How do I fix CVE-2017-5923?
Upgrade to a fixed version.
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-2017-5923 being exploited?
There is no known exploitation of CVE-2017-5923 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2017-5923, GHSA-x9r6-fxx3-q7m8, UBUNTU-CVE-2017-5923.