CVE-2021-29662
CVE-2021-29662 is a high-severity vulnerability in Data with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-704.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 2% (81st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-704
- Affected product: Data
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-29662?
- 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.
- How severe is CVE-2021-29662?
- CVE-2021-29662 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2021-29662 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-29662?
- CVE-2021-29662 primarily affects Data. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-29662?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-29662 published?
- CVE-2021-29662 was published on 2021-03-31 and last updated on 2026-06-17.
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://security.netapp.com/advisory/ntap-20210604-0002/
- https://sick.codes/sick-2021-018/
Affected products (2)
- cpe:2.3:a:data\:\:validate\:\:ip_project:data\:\:validate\:\:ip:*:*:*:*:*:perl:*:*
- cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*
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