p PatchFirst

CVE-2020-12062

CVE-2020-12062

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.5 · High · EPSS 2.2% · Fix available

Published
Updated

Stack: system · network

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • openssh Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:8.3p1-1

    Update to 1:8.3p1-1

  • openssh Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:8.3p1-1

    Update to 1:8.3p1-1

  • openssh Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:8.3p1-1

    Update to 1:8.3p1-1

  • openssh Ubuntu:Pro:14.04:LTS

    Versions
    • 1:6.2p2-6
    • 1:6.2p2-6ubuntu1
    • 1:6.4p1-1
    • 1:6.4p1-2
    • 1:6.5p1-1
    • 1:6.5p1-2
    • 1:6.5p1-3
    • 1:6.5p1-4
    • 1:6.5p1-6
    • 1:6.6p1-1
    • 1:6.6p1-2
    • 1:6.6p1-2ubuntu1
    • 1:6.6p1-2ubuntu2
    • 1:6.6p1-2ubuntu2.2
    • 1:6.6p1-2ubuntu2.3
    • 1:6.6p1-2ubuntu2.4
    • 1:6.6p1-2ubuntu2.6
    • 1:6.6p1-2ubuntu2.7
    • 1:6.6p1-2ubuntu2.8
    • 1:6.6p1-2ubuntu2.10
    • 1:6.6p1-2ubuntu2.11
    • 1:6.6p1-2ubuntu2.12
    • 1:6.6p1-2ubuntu2.13
    • 1:6.6p1-2ubuntu2.13+esm1
    • 1:6.6p1-2ubuntu2.13+esm2
    • 1:6.6p1-2ubuntu2.13+esm3
    • 1:6.6p1-2ubuntu2.13+esm4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:16.04:LTS

    Versions
    • 1:6.9p1-2
    • 1:6.9p1-3
    • 1:7.1p1-1
    • 1:7.1p1-3
    • 1:7.1p1-4
    • 1:7.1p1-6
    • 1:7.1p2-1
    • 1:7.1p2-2
    • 1:7.2p1-1
    • 1:7.2p2-1
    • 1:7.2p2-2
    • 1:7.2p2-3
    • 1:7.2p2-4
    • 1:7.2p2-4ubuntu1
    • 1:7.2p2-4ubuntu2.1
    • 1:7.2p2-4ubuntu2.2
    • 1:7.2p2-4ubuntu2.4
    • 1:7.2p2-4ubuntu2.5
    • 1:7.2p2-4ubuntu2.6
    • 1:7.2p2-4ubuntu2.7
    • 1:7.2p2-4ubuntu2.8
    • 1:7.2p2-4ubuntu2.10
    • 1:7.2p2-4ubuntu2.10+esm1
    • 1:7.2p2-4ubuntu2.10+esm2
    • 1:7.2p2-4ubuntu2.10+esm3
    • 1:7.2p2-4ubuntu2.10+esm4
    • 1:7.2p2-4ubuntu2.10+esm5
    • 1:7.2p2-4ubuntu2.10+esm6
    • 1:7.2p2-4ubuntu2.10+esm7
    • 1:7.2p2-4ubuntu2.10+esm8
    • 1:7.2p2-4ubuntu2.10+esm9
    • 1:7.2p2-4ubuntu2.10+esm10
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:18.04:LTS

    Versions
    • 1:7.5p1-10
    • 1:7.6p1-4
    • 1:7.6p1-4ubuntu0.1
    • 1:7.6p1-4ubuntu0.2
    • 1:7.6p1-4ubuntu0.3
    • 1:7.6p1-4ubuntu0.5
    • 1:7.6p1-4ubuntu0.6
    • 1:7.6p1-4ubuntu0.7
    • 1:7.6p1-4ubuntu0.7+esm1
    • 1:7.6p1-4ubuntu0.7+esm2
    • 1:7.6p1-4ubuntu0.7+esm3
    • 1:7.6p1-4ubuntu0.7+esm4
    • 1:7.6p1-4ubuntu0.7+esm5
    • 1:7.6p1-4ubuntu0.7+esm6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh-ssh1 Ubuntu:18.04:LTS

    Versions
    • 1:7.5p1-8
    • 1:7.5p1-9
    • 1:7.5p1-9build1
    • 1:7.5p1-10
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh Ubuntu:Pro:20.04:LTS

    Versions
    • 1:8.0p1-6build1
    • 1:8.1p1-1
    • 1:8.1p1-5
    • 1:8.2p1-4
    • 1:8.2p1-4ubuntu0.1
    • 1:8.2p1-4ubuntu0.2
    • 1:8.2p1-4ubuntu0.3
    • 1:8.2p1-4ubuntu0.4
    • 1:8.2p1-4ubuntu0.5
    • 1:8.2p1-4ubuntu0.7
    • 1:8.2p1-4ubuntu0.8
    • 1:8.2p1-4ubuntu0.9
    • 1:8.2p1-4ubuntu0.10
    • 1:8.2p1-4ubuntu0.11
    • 1:8.2p1-4ubuntu0.12
    • 1:8.2p1-4ubuntu0.13
    • 1:8.2p1-4ubuntu0.13+esm1
    • 1:8.2p1-4ubuntu0.13+esm2
    • 1:8.2p1-4ubuntu0.13+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • openssh-ssh1 Ubuntu:20.04:LTS

    Versions
    • 1:7.5p1-11build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →