CVE-2014-7187 Memory corruption in n/a
Remote attackers can cause a denial of service in GNU Bash via deeply nested for loops due to an off-by-one error.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2014-7187?
CVE-2014-7187 is a critical memory corruption vulnerability in n/a, published on 28 Sep 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Off-by-one error in the read_token_word function in parse.y in GNU Bash through 4.3 bash43-026 allows remote attackers to cause a denial of service (out-of-bounds array access and application crash) or possibly have unspecified other impact via deeply nested for loops, aka the "word_lineno" issue.
Weakness: CWE-119
Which versions are affected by CVE-2014-7187?
It affects 1 product.
Products include Gnu Bash.
How do I fix CVE-2014-7187?
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-2014-7187 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2014-7187 exists.
Public exploit code: 2 Exploit-DB entries.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2014-7187, GHSA-8m22-gm6f-5487, UBUNTU-CVE-2014-7187.