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OpenSSH Vulnerability: CVE-2020-12062

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OpenSSH Vulnerability: CVE-2020-12062

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
06/01/2020
Created
06/08/2020
Added
06/08/2020
Modified
06/09/2020

Description

** DISPUTED ** The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that "this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol" and "utimes does not fail under normal circumstances."

Solution(s)

  • openbsd-openssh-upgrade-latest

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