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In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |
In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |
In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and...
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |
Some fixes available 3 of 14
ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | Fixed | Fixed | Fixed | Needs evaluation | Needs evaluation |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |
Some fixes available 3 of 14
sshd in OpenSSH before 10.4 does not always honor the minimum authentication delay.
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | Fixed | Fixed | Fixed | Needs evaluation | Needs evaluation |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |
Some fixes available 3 of 14
sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service (resource consumption from excessive authentication attempts) because MaxAuthTries was mishandled for GSSAPIAuthentication.
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | Fixed | Fixed | Fixed | Needs evaluation | Needs evaluation |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |
Some fixes available 3 of 14
In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not.
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | Fixed | Fixed | Fixed | Needs evaluation | Needs evaluation |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |
Some fixes available 3 of 14
sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory.
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | Fixed | Fixed | Fixed | Needs evaluation | Needs evaluation |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |
Some fixes available 3 of 14
internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | Fixed | Fixed | Fixed | Needs evaluation | Needs evaluation |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |
Some fixes available 3 of 14
scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations.
2 affected packages
openssh, openssh-ssh1
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| openssh | Fixed | Fixed | Fixed | Needs evaluation | Needs evaluation |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |