Vulnerability · Published May 13, 2020 · Assigned by freebsd

CVE-2020-7455

Medium 5.5

In plain English

A medium-severity security flaw in FreeBSD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).

Severity (CVSS NVD)5.5Medium

Exploit odds (30 days)0.5%top 54.1% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
n/a	FreeBSD	FreeBSD 12.1-RELEASE before p5, 11.4-BETA1 before p1, and 11.3-RELEASE before p9

References

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