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Joined: 12 May 2004
Posts: 2331

PostPosted: Mon Jan 08, 2018 3:26 am    Post subject: [ GLSA 201801-05 ] OpenSSH Reply with quote

Gentoo Linux Security Advisory

Title: OpenSSH: Permission issue (GLSA 201801-05)
Severity: normal
Exploitable: remote
Date: 2018-01-07
Bug(s): #633428
ID: 201801-05


A flaw has been discovered in OpenSSH which could allow a remote
attacker to create zero-length files.


OpenSSH is a complete SSH protocol implementation that includes SFTP
client and server support.

Affected Packages

Package: net-misc/openssh
Vulnerable: < 7.5_p1-r3
Unaffected: >= 7.5_p1-r3
Architectures: All supported architectures


The process_open function in sftp-server.c in OpenSSH did not properly
prevent write operations in readonly mode.


A remote attacker could cause the creation of zero-length files.


There is no known workaround at this time.


All OpenSSH users should upgrade to the latest version:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=net-misc/openssh-7.5_p1-r3"



Last edited by GLSA on Mon Jan 15, 2018 4:17 am; edited 1 time in total
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