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.
Mitigation
Minimal update. May introduce new vulnerabilities or breaking changes.
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 alpine v3.15 | | | 8.4_p1-r0 |
alpine v3.18 | | | 8.4_p1-r0 |
alpine v3.12 | | | 8.3_p1-r1 |
 debian 11 | | =1:10.0p1-1 || =1:10.0p1-2 || =1:10.0p1-3 || =1:10.0p1-4 || =1:10.0p1-5 || =1:10.0p1-5~bpo12+2 || =1:10.0p1-6 || =1:10.0p1-7 || =1:10.0p1-7~bpo12+1 || =1:10.0p1-8 || =1:10.1p1-1 || =1:10.1p1-2 || =1:10.2p1-1 || =1:10.2p1-2 || =1:10.2p1-2~bpo13+1 || =1:10.2p1-3 || =1:10.2p1-4 || =1:10.2p1-5 || =1:10.2p1-6 || =1:10.2p1-6~bpo13+1 || =1:10.3p1-1 || =1:10.3p1-1~bpo13+1 || =1:10.3p1-2 || =1:10.3p1-3 || =1:10.3p1-4 || =1:10.3p1-5 || =1:10.3p1-7 || =1:10.3p1-8 || =1:10.3p1-9 || =1:10.4p1-1 || =1:10.4p1-2 || =1:10.4p1-3 || =1:10.4p1-4 || =1:10.4p1-5 || =1:8.4p1-5 || =1:8.4p1-5+deb11u1 || =1:8.4p1-5+deb11u2 || =1:8.4p1-5+deb11u3 || =1:8.4p1-5+deb11u4 || =1:8.4p1-5+deb11u5 || =1:8.4p1-5+deb11u6 || =1:8.4p1-5+deb11u7 || =1:8.4p1-6 || =1:8.7p1-1 || =1:8.7p1-2 || =1:8.7p1-3 || =1:8.7p1-4 || =1:8.8p1-1 || =1:8.9p1-1 || =1:8.9p1-2 || =1:8.9p1-3 || =1:9.0p1-1 || =1:9.1p1-1 || =1:9.1p1-2 || =1:9.2p1-1 || =1:9.2p1-2 || =1:9.3p1-1 || =1:9.3p1-1+loong64 || =1:9.3p2-1 || =1:9.4p1-1 || =1:9.5p1-1 || =1:9.5p1-2 || =1:9.6p1-1 || =1:9.6p1-2 || =1:9.6p1-3 || =1:9.6p1-4 || =1:9.6p1-5 || =1:9.7p1-1 || =1:9.7p1-2 || =1:9.7p1-3 || =1:9.7p1-3+hurd.1 || =1:9.7p1-4 || =1:9.7p1-5 || =1:9.7p1-6 || =1:9.7p1-7 || =1:9.8p1-1 || =1:9.8p1-2 || =1:9.8p1-3 || =1:9.8p1-4 || =1:9.8p1-7 || =1:9.8p1-8 || =1:9.9p1-1 || =1:9.9p1-2 || =1:9.9p1-3 || =1:9.9p1-3+hurd.1 || =1:9.9p2-1 || =1:9.9p2-2 | - |
alpine v3.13 | | | 8.4_p1-r0 |
alpine v3.14 | | | 8.4_p1-r0 |
alpine v3.20 | | | 8.4_p1-r0 |
alpine v3.21 | | | 8.4_p1-r0 |
alpine v3.16 | | | 8.4_p1-r0 |
alpine v3.19 | | | 8.4_p1-r0 |
