Medium severity5.9NVD Advisory· Published Jun 29, 2020· Updated Jun 17, 2026
CVE-2020-14145
CVE-2020-14145
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
51- OpenSSH/OpenSSHdescription
- osv-coords49 versionspkg:rpm/almalinux/openssh-askpasspkg:rpm/opensuse/openssh-askpass-gnome&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/openssh-askpass-gnome&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/openssh&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/openssh&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/openssh-askpass-gnome&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP1pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/openssh-askpass-gnome&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/openssh&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/openssh&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/openssh&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/openssh&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/openssh&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/openssh&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/openssh&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/openssh&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 8.0p1-10.el8+ 48 more
- (no CPE)range: < 8.0p1-10.el8
- (no CPE)range: < 7.9p1-lp151.4.18.1
- (no CPE)range: < 8.1p1-lp152.4.9.1
- (no CPE)range: < 7.9p1-lp151.4.18.1
- (no CPE)range: < 8.1p1-lp152.4.9.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.9p1-6.22.1
- (no CPE)range: < 8.1p1-5.9.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.6p1-9.38.1
- (no CPE)range: < 7.6p1-9.38.1
- (no CPE)range: < 7.9p1-6.22.1
- (no CPE)range: < 8.1p1-5.9.1
- (no CPE)range: < 7.9p1-6.22.1
- (no CPE)range: < 8.1p1-5.9.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.6p1-9.38.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.6p1-9.38.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-78.10.1
- (no CPE)range: < 7.2p2-74.57.1
- (no CPE)range: < 7.2p2-78.10.1
Patches
Vulnerability mechanics
References
8- www.openwall.com/lists/oss-security/2020/12/02/1nvdMailing ListPatchThird Party Advisory
- anongit.mindrot.org/openssh.git/commit/nvdPatchThird Party Advisory
- github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1nvdPatchThird Party Advisory
- docs.ssh-mitm.at/CVE-2020-14145.htmlnvdThird Party Advisory
- github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.pynvdThird Party Advisory
- security.gentoo.org/glsa/202105-35nvdThird Party Advisory
- security.netapp.com/advisory/ntap-20200709-0004/nvdThird Party Advisory
- www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/nvdThird Party Advisory
News mentions
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