CVE-2021-47156 Security feature bypass in n/a
Attackers can bypass IP-based access controls by using IP addresses with extraneous zero characters in the Net::IPAddress::Util Perl module.
- 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-2021-47156?
CVE-2021-47156 is a medium-severity vulnerability in n/a, published on 18 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Net::IPAddress::Util module before 5.000 for Perl does not properly consider extraneous zero characters in an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.
Weakness: CWE-1287
Which versions are affected by CVE-2021-47156?
How do I fix CVE-2021-47156?
No fix has been published for CVE-2021-47156 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-47156 being exploited?
There is no known exploitation of CVE-2021-47156 in the wild and no public exploit code.
Sources
Also known as GHSA-42vc-w257-pp26.