CVE-2020-14145CWE-203

CVE-2020-14145

Medium · published June 29, 2020

CVSS v3.1
5.9
EPSS
3%
Percentile
87.1
In the wild
Unconfirmed
What it is

The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.02949 · 87.1th percentile
Weakness
CWE-203 · Observable Discrepancy
Published
2020-06-29T22:15Z
Affected products (12)
ProductVersionsFixed in
openbsd/openssh≥ 5.7, < 8.48.4
openbsd/opensshall versions—
openbsd/opensshall versions—
openbsd/opensshall versions—
netapp/aff_a700s_firmwareall versions—
netapp/active_iq_unified_manager≥ 9.5—
netapp/hci_management_nodeall versions—
netapp/ontap_select_deploy_administration_utilityall versions—
netapp/solidfireall versions—
netapp/steelstore_cloud_integrated_storageall versions—
netapp/hci_compute_nodeall versions—
netapp/hci_storage_nodeall versions—
References (17)
http://www.openwall.com/lists/oss-security/2020/12/02/1 · [email protected]https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d · [email protected]https://docs.ssh-mitm.at/CVE-2020-14145.html · [email protected]https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1 · [email protected]https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py · [email protected]https://security.gentoo.org/glsa/202105-35 · [email protected]https://security.netapp.com/advisory/ntap-20200709-0004/ · [email protected]https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/ · [email protected]http://www.openwall.com/lists/oss-security/2020/12/02/1 · af854a3a-2127-422b-91ae-364da2661108https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d · af854a3a-2127-422b-91ae-364da2661108https://docs.ssh-mitm.at/CVE-2020-14145.html · af854a3a-2127-422b-91ae-364da2661108https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1 · af854a3a-2127-422b-91ae-364da2661108https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py · af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202105-35 · af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200709-0004/ · af854a3a-2127-422b-91ae-364da2661108https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/ · af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/html/ssa-398330.html · 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
EPSS history
Timeline
  • 29 JUN 17:33Z
    The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation
    cvelistv5