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Gentoo Linux Security Advisory GLSA 201801-05 |
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https://security.gentoo.org/ |
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Severity: Normal |
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Title: OpenSSH: Permission issue |
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Date: January 07, 2018 |
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Bugs: #633428 |
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ID: 201801-05 |
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Synopsis |
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======== |
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A flaw has been discovered in OpenSSH which could allow a remote |
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attacker to create zero-length files. |
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Background |
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========== |
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OpenSSH is a complete SSH protocol implementation that includes SFTP |
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client and server support. |
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-misc/openssh < 7.5_p1-r3 >= 7.5_p1-r3 |
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Description |
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=========== |
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The process_open function in sftp-server.c in OpenSSH did not properly |
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prevent write operations in readonly mode. |
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Impact |
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====== |
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A remote attacker could cause the creation of zero-length files. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All OpenSSH users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-misc/openssh-7.5_p1-r3" |
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References |
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========== |
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[ 1 ] CVE-2017-15906 |
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https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-15906 |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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https://security.gentoo.org/glsa/201801-05 |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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