Title: FreeBSD linprocfs Privileged Process Memory Disclosure Vulnerability
Severity: HIGH
Description:
FreeBSD's linprocfs is an implementation of the Linux /proc filesystem, which provides an interface to some process and system information and parameters. It is used with Linux binaries so they can obtain access to exported kernel data.
An access validation error can occur when an unprivileged process is debugging a privileged one. It is possible for an unprivileged process to retain read access to the memory of a privleged second process by opening the /proc/<pid>/mem file prior to debugging the target process.
This may result in the disclosure of sensitive data in the target process' memory.
Affected Products:
- FreeBSD FreeBSD 3.5.0
- FreeBSD FreeBSD 3.5.0 -STABLE
- FreeBSD FreeBSD 3.5.1 -RELEASE
- FreeBSD FreeBSD 3.5.1 -STABLE
- FreeBSD FreeBSD 4.0.0
- FreeBSD FreeBSD 4.1.0
- FreeBSD FreeBSD 4.1.1
- FreeBSD FreeBSD 4.1.1 -RELEASE
- FreeBSD FreeBSD 4.1.1 -STABLE
- FreeBSD FreeBSD 4.2.0
- FreeBSD FreeBSD 4.2.0 -RELEASE
- FreeBSD FreeBSD 4.2.0 -STABLE
- FreeBSD FreeBSD 4.3.0
- FreeBSD FreeBSD 4.3.0 -RELEASE
- FreeBSD FreeBSD 4.3.0 -STABLE
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