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CVE-2014-3873

Status Candidate

Overview

The ktrace utility in the FreeBSD kernel 8.4 before p11, 9.1 before p14, 9.2 before p7, and 9.3-BETA1 before p1 uses an incorrect page fault kernel trace entry size, which allows local users to obtain sensitive information from kernel memory via a kernel process trace.

Related Files

FreeBSD Security Advisory - ktrace Kernel Memory Disclosure
Posted Jun 4, 2014
Site security.freebsd.org

FreeBSD Security Advisory - Due to an overlooked merge to -STABLE branches, the size for page fault kernel trace entries was set incorrectly. A user who can enable kernel process tracing could end up reading the contents 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
advisories | CVE-2014-3873
MD5 | 62f1437f209060349158195286c154b4
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