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Some fixes available 8 of 15
A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | Fixed | Fixed | Fixed | Fixed |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored |
A signal handler in sshd(8) may call a logging function that is not async-signal-safe. The signal handler is invoked when a client does not authenticate within the LoginGraceTime seconds (120 by default). This signal handler...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | Not affected | Not affected | Not affected | Not affected |
| openssh-ssh1 | Not affected | Not affected | Not affected | Not affected |
A race condition vulnerability was discovered in how signals are handled by OpenSSH's server (sshd). If a remote attacker does not authenticate within a set time period, then sshd's SIGALRM handler is called...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | Not affected | Not affected | Not affected | Not affected |
| openssh-ssh1 | Not affected | Not affected | Not affected | Not affected |
OpenSSH 9.5 through 9.7 before 9.8 sometimes allows timing attacks against echo-off password entry (e.g., for su and Sudo) because of an ObscureKeystrokeTiming logic error. Similarly, other timing attacks against keystroke entry...
2 affected packages
openssh-ssh1, openssh
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh-ssh1 | Not affected | Not affected | Not affected | Not affected |
| openssh | Fixed | Not affected | Not affected | Not affected |
A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | Fixed | Fixed | Not affected | Not affected |
| openssh-ssh1 | Not affected | Not affected | Not affected | Not affected |
OpenSSH through 10.0, when common types of DRAM are used, might allow row hammer attacks (for authentication bypass) because the integer value of authenticated in mm_answer_authpassword does not resist flips of a single bit. NOTE:...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | — | Not affected | Not affected | Not affected |
| openssh-ssh1 | — | Not affected | Not affected | Not affected |
Some fixes available 10 of 20
In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, and this name is referenced by an expansion token in certain situations. For example, an untrusted Git repository...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | Fixed | Fixed | Fixed | Fixed |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored |
Some fixes available 5 of 12
In ssh-agent in OpenSSH before 9.6, certain destination constraints can be incompletely applied. When destination constraints are specified during addition of PKCS#11-hosted private keys, these constraints are only applied to the...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | Fixed | Fixed | Not affected | Not affected |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored |
Some fixes available 42 of 93
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation...
13 affected packages
dropbear, golang-go.crypto, snapd, lxd, libssh...
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| dropbear | Needs evaluation | Fixed | Fixed | Fixed |
| golang-go.crypto | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| snapd | Not affected | Not affected | Not affected | Not affected |
| lxd | Not in release | Not in release | Not affected | Fixed |
| libssh | Not affected | Fixed | Fixed | Not affected |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored |
| libssh2 | Not affected | Not affected | Not affected | Not affected |
| openssh | Fixed | Fixed | Fixed | Fixed |
| paramiko | Fixed | Fixed | Fixed | Needs evaluation |
| putty | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| proftpd-dfsg | Not affected | Not affected | Fixed | Needs evaluation |
| python-asyncssh | Fixed | Fixed | Fixed | Ignored |
| filezilla | Fixed | Fixed | Fixed | Not affected |
Some fixes available 11 of 22
The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system. (Code in /usr/lib is not...
2 affected packages
openssh, openssh-ssh1
| Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|
| openssh | Fixed | Fixed | Fixed | Fixed |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored |