CVE-2019-3994 Use after free in ELOG
A remote unauthenticated attacker can crash the ELOG server by sending multiple HTTP POST requests, causing a use-after-free condition.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-3994?
CVE-2019-3994 is a high-severity use after free vulnerability in Fedoraproject Fedora, published on 17 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ELOG 3.1.4-57bea22 and below is affected by a denial of service vulnerability due to a use after free. A remote unauthenticated attacker can crash the ELOG server by sending multiple HTTP POST requests which causes the ELOG function retrieve_url() to use a freed variable.
Weakness: CWE-416
Which versions are affected by CVE-2019-3994?
It affects 2 products.
Products include Elog Project Elog, Fedoraproject Fedora.
How do I fix CVE-2019-3994?
No fix has been published for CVE-2019-3994 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2019-3994 being exploited?
There is no known exploitation of CVE-2019-3994 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as GHSA-8cv3-rqqw-vw5m, UBUNTU-CVE-2019-3994.