CVE-2017-11343 Denial of service in n/a
An attacker can cause denial of service in CHICKEN Scheme by providing crafted input that triggers inefficient symbol table lookups.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-11343?
CVE-2017-11343 is a high-severity denial of service vulnerability in n/a, published on 16 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Due to an incomplete fix for CVE-2012-6125, all versions of CHICKEN Scheme up to and including 4.12.0 are vulnerable to an algorithmic complexity attack. An attacker can provide crafted input which, when inserted into the symbol table, will result in O(n) lookup time.
Weakness: CWE-407
Which versions are affected by CVE-2017-11343?
It affects 1 product.
Products include Call-Cc Chicken.
How do I fix CVE-2017-11343?
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-2017-11343 being exploited?
There is no known exploitation of CVE-2017-11343 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2017-11343, GHSA-7945-x94j-3j4w, UBUNTU-CVE-2017-11343.