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Package details: pkg:deb/ubuntu/libssh@0.9.3-2ubuntu1
purl pkg:deb/ubuntu/libssh@0.9.3-2ubuntu1
Next non-vulnerable version 0.9.3-2ubuntu2.2
Latest non-vulnerable version 0.9.3-2ubuntu2.2
Risk 4.0
Vulnerabilities affecting this package (2)
Vulnerability Summary Fixed by
VCID-853t-ygsk-aaam
Aliases:
CVE-2021-3634
A flaw has been found in libssh in versions prior to 0.9.6. The SSH protocol keeps track of two shared secrets during the lifetime of the session. One of them is called secret_hash and the other session_id. Initially, both of them are the same, but after key re-exchange, previous session_id is kept and used as an input to new secret_hash. Historically, both of these buffers had shared length variable, which worked as long as these buffers were same. But the key re-exchange operation can also change the key exchange method, which can be based on hash of different size, eventually creating "secret_hash" of different size than the session_id has. This becomes an issue when the session_id memory is zeroed or when it is used again during second key re-exchange.
0.9.3-2ubuntu2.2
Affected by 0 other vulnerabilities.
VCID-pa3r-uq2c-aaac
Aliases:
CVE-2020-16135
libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL.
0.9.3-2ubuntu2.1
Affected by 1 other vulnerability.
Vulnerabilities fixed by this package (0)
Vulnerability Summary Aliases
This package is not known to fix vulnerabilities.

Date Actor Action Vulnerability Source VulnerableCode Version