CVE-2015-1521 Memory corruption in n/a

High 7.5 Published 24 Apr 2017 Updated 6 Aug 2024

Remote attackers can cause a denial of service in Bro via crafted DNP3 packets due to improper handling of zero-length values.

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-2015-1521?

CVE-2015-1521 is a high-severity memory corruption vulnerability in n/a, published on 24 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

analyzer/protocol/dnp3/DNP3.cc in Bro before 2.3.2 does not properly handle zero values of a packet length, which allows remote attackers to cause a denial of service (buffer overflow or buffer over-read if NDEBUG; otherwise assertion failure) via a crafted DNP3 packet.

Weakness: CWE-119

Which versions are affected by CVE-2015-1521?

It affects 1 product.

Products include Bro Bro.

How do I fix CVE-2015-1521?

No fix has been published for CVE-2015-1521 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2015-1521 being exploited?

There is no known exploitation of CVE-2015-1521 in the wild and no public exploit code.

Sources

Also known as GHSA-x659-79vh-p464.