VulnerableCode Package Details - pkg:deb/ubuntu/libssh@0.6.3-4.1

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Vulnerability	Summary	Fixed by
VCID-2pv1-wp6g-aaam Aliases: CVE-2020-1730	A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability.	0.9.0-1ubuntu1.4 Affected by 2 other vulnerabilities. This version is affected by these other vulnerabilities: {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }}
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-bhtn-1qeu-aaah Aliases: CVE-2018-10933	A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access.	0.8.0~20170825.94fa1e38-1ubuntu0.1 Affected by 4 other vulnerabilities. This version is affected by these other vulnerabilities: {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }}
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. This version is affected by these other vulnerabilities: {{ fixed_by_vuln.vulnerability_id }}
VCID-syp1-uyfe-aaap Aliases: CVE-2019-14889	A flaw was found with the libssh API function ssh_scp_new() in versions before 0.9.3 and before 0.8.8. When the libssh SCP client connects to a server, the scp command, which includes a user-provided path, is executed on the server-side. In case the library is used in a way where users can influence the third parameter of the function, it would become possible for an attacker to inject arbitrary commands, leading to a compromise of the remote target.	0.9.0-1ubuntu1.3 Affected by 3 other vulnerabilities. This version is affected by these other vulnerabilities: {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }}
VCID-wu41-e9qk-aaag Aliases: CVE-2016-0739	libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."	0.6.3-4.2ubuntu1 Affected by 5 other vulnerabilities. This version is affected by these other vulnerabilities: {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }} {{ fixed_by_vuln.vulnerability_id }}

Vulnerability

Summary

Fixed by

VCID-2pv1-wp6g-aaam
Aliases:
CVE-2020-1730

A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability.

0.9.0-1ubuntu1.4
Affected by 2 other vulnerabilities.

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-bhtn-1qeu-aaah
Aliases:
CVE-2018-10933

A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access.

0.8.0~20170825.94fa1e38-1ubuntu0.1
Affected by 4 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.

VCID-syp1-uyfe-aaap
Aliases:
CVE-2019-14889

A flaw was found with the libssh API function ssh_scp_new() in versions before 0.9.3 and before 0.8.8. When the libssh SCP client connects to a server, the scp command, which includes a user-provided path, is executed on the server-side. In case the library is used in a way where users can influence the third parameter of the function, it would become possible for an attacker to inject arbitrary commands, leading to a compromise of the remote target.

0.9.0-1ubuntu1.3
Affected by 3 other vulnerabilities.

VCID-wu41-e9qk-aaag
Aliases:
CVE-2016-0739

libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."

0.6.3-4.2ubuntu1
Affected by 5 other vulnerabilities.

Vulnerability	Summary	Aliases
This package is not known to fix vulnerabilities.

Vulnerability

Summary

Aliases

This package is not known to fix vulnerabilities.

Next non-vulnerable version	0.9.3-2ubuntu2.2
Latest non-vulnerable version	0.9.3-2ubuntu2.2
Risk	10.0