tftp.c in libslirp 4.1.0, as used in QEMU 4.2.0, does not prevent ..\ directory traversal on Windows.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
Link | Tags |
---|---|
https://gitlab.freedesktop.org/slirp/libslirp/commit/14ec36e107a8c9af7d0a80c3571fe39b291ff1d4 | third party advisory patch |
http://www.openwall.com/lists/oss-security/2020/01/17/2 | third party advisory mailing list |
https://security-tracker.debian.org/tracker/CVE-2020-7211 | third party advisory vendor advisory |