Vulnerability Monitor

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CVE-2020-7455

In FreeBSD 12.1-STABLE before r360973, 12.1-RELEASE before p5, 11.4-STABLE before r360973, 11.4-BETA1 before p1 and 11.3-RELEASE before p9, the FTP packet handler in libalias incorrectly calculates some packet length allowing disclosure of small amounts of kernel (for kernel NAT) or natd process space (for userspace natd).

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.5, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 1 product from freebsd organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-05-13T16:15:13.120

Last Modified

2024-11-21T05:37:10.720

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.5 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:N/A:N

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

3.9

Impact Score

2.9

Weaknesses

Type: Primary
CWE-772

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	freebsd	freebsd	11.3	Yes
Operating System	freebsd	freebsd	11.3	Yes
Operating System	freebsd	freebsd	11.3	Yes
Operating System	freebsd	freebsd	11.3	Yes
Operating System	freebsd	freebsd	11.3	Yes
Operating System	freebsd	freebsd	11.3	Yes
Operating System	freebsd	freebsd	11.3	Yes
Operating System	freebsd	freebsd	11.3	Yes
Operating System	freebsd	freebsd	11.3	Yes
Operating System	freebsd	freebsd	11.4	Yes
Operating System	freebsd	freebsd	11.4	Yes
Operating System	freebsd	freebsd	12.1	Yes
Operating System	freebsd	freebsd	12.1	Yes
Operating System	freebsd	freebsd	12.1	Yes
Operating System	freebsd	freebsd	12.1	Yes
Operating System	freebsd	freebsd	12.1	Yes

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:13.libalias.asc Vendor Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20200518-0005/ Third Party Advisory ([email protected])
https://www.zerodayinitiative.com/advisories/ZDI-20-661/ Third Party Advisory, VDB Entry ([email protected])
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:13.libalias.asc Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20200518-0005/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.zerodayinitiative.com/advisories/ZDI-20-661/ Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For freebsd's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.