Vulnerability CVE-2021-29662
Published: 2021-03-31

Description:
The Data::Validate::IP module through 0.29 for Perl does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.

Type:

CWE-863

 (Incorrect Authorization)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Data\ -> \ 

 References:
https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
https://github.com/houseabsolute/Data-Validate-IP
https://github.com/houseabsolute/Data-Validate-IP/commit/3bba13c819d616514a75e089badd75002fd4f14e
https://github.com/sickcodes/security/blob/master/advisories/SICK-2021-018.md
https://sick.codes/sick-2021-018/
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