GLSA 201801-05: OpenSSH: Permission issue
| Severity: | normal |
| Title: | OpenSSH: Permission issue |
| Date: | 01/07/2018 |
| Bugs: | |
| ID: | 201801-05 |
Synopsis
A flaw has been discovered in OpenSSH which could allow a remote attacker to create zero-length files.Background
OpenSSH is a complete SSH protocol implementation that includes SFTP client and server support.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| net-misc/openssh | < 7.5_p1-r3 | >= 7.5_p1-r3 | All supported architectures |
Description
The process_open function in sftp-server.c in OpenSSH did not properly prevent write operations in readonly mode.
Impact
A remote attacker could cause the creation of zero-length files.
Workaround
There is no known workaround at this time.
Resolution
All OpenSSH users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/openssh-7.5_p1-r3"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.