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CVE-2019-5605

Status Candidate

Overview

In FreeBSD 11.3-STABLE before r350217, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, due to insufficient initialization of memory copied to userland in the freebsd32_ioctl interface, small amounts of kernel memory may be disclosed to userland processes. This may allow an attacker to leverage this information to obtain elevated privileges either directly or indirectly.

Related Files

FreeBSD Security Advisory - FreeBSD-SA-19:14.freebsd32
Posted Jul 25, 2019
Authored by Ilja van Sprundel | Site security.freebsd.org

FreeBSD Security Advisory - Due to insufficient initialization of memory copied to userland in the components listed above small amounts of kernel memory may be disclosed to userland processes. A user who can invoke 32-bit FreeBSD ioctls may be able to read the contents of small portions of kernel memory. Such memory might contain sensitive information, such as portions of the file cache or terminal buffers. This information might be directly useful, or it might be leveraged to obtain elevated privileges in some way; for example, a terminal buffer might include a user-entered password.

tags | advisory, kernel
systems | freebsd, bsd
advisories | CVE-2019-5605
MD5 | 5736cbc3b6e4753872fa443e695addc6
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