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In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | — | — | Ignored | Ignored |
| openssh-ssh1 | — | — | Ignored | Ignored |
Some fixes available 4 of 18
An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the...
2 affected packages
openssh-ssh1, openssh
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored |
| openssh | Not affected | Not affected | Not affected | Fixed |
Some fixes available 16 of 30
An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using...
2 affected packages
openssh-ssh1, openssh
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored |
| openssh | Fixed | Fixed | Fixed | Fixed |
Some fixes available 16 of 30
In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.
2 affected packages
openssh-ssh1, openssh
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored |
| openssh | Fixed | Fixed | Fixed | Fixed |
Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | — | — | Ignored | Ignored |
| openssh-ssh1 | — | — | Ignored | Ignored |
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | — | — | Not affected | Fixed |
| openssh-ssh1 | — | — | Not affected | Not affected |
sshd in OpenSSH before 7.4 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, related to kex.c and packet.c.
1 affected package
openssh
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | — | — | Not affected | Not affected |
Some fixes available 10 of 11
The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.
1 affected package
openssh
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | — | — | Fixed | Fixed |
Some fixes available 2 of 4
The shared memory manager (associated with pre-authentication compression) in sshd in OpenSSH before 7.4 does not ensure that a bounds check is enforced by all compilers, which might allows local users to gain privileges by...
1 affected package
openssh
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | — | — | Not affected | Not affected |
Some fixes available 2 of 4
authfile.c in sshd in OpenSSH before 7.4 does not properly consider the effects of realloc on buffer contents, which might allow local users to obtain sensitive private-key information by leveraging access to a privilege-separated...
1 affected package
openssh
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | — | — | Not affected | Not affected |