CVE-2020-7455

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-05-13 · updated 2026-06-17
Weakness: CWE-772

Description

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).

Affected products

FreeBSD: 11.3, 11.3-p1, 11.3-p2, 11.3-p3, 11.3-p4, 11.3-p5 (+10)

References

https://security.FreeBSD.org/advisories/FreeBSD-SA-20:13.libalias.asc
https://security.netapp.com/advisory/ntap-20200518-0005/
https://www.zerodayinitiative.com/advisories/ZDI-20-661/
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:13.libalias.asc
https://security.netapp.com/advisory/ntap-20200518-0005/
https://www.zerodayinitiative.com/advisories/ZDI-20-661/

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