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Huawei EulerOS: CVE-2020-12062: openssh security update

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Huawei EulerOS: CVE-2020-12062: openssh security update

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
06/01/2020
Created
09/04/2020
Added
09/03/2020
Modified
11/08/2023

Description

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)

  • huawei-euleros-2_0_sp5-upgrade-openssh
  • huawei-euleros-2_0_sp5-upgrade-openssh-askpass
  • huawei-euleros-2_0_sp5-upgrade-openssh-clients
  • huawei-euleros-2_0_sp5-upgrade-openssh-keycat
  • huawei-euleros-2_0_sp5-upgrade-openssh-server

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