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CVE-2024-7589

Medium priority
Not affected

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 16.04 LTS
openssh Not affected Not affected Not affected Not affected Not affected
openssh-ssh1 Not affected Not affected Not affected Not affected
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CVE-2024-6409

Medium priority
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 16.04 LTS
openssh Not affected Not affected Not affected Not affected Not affected
openssh-ssh1 Not affected Not affected Not affected Not affected
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CVE-2024-39894

Medium priority
Fixed

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, openssh-ssh1

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
openssh Fixed Not affected Not affected Not affected Not affected
openssh-ssh1 Not affected Not affected Not affected Not affected
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CVE-2024-6387

High priority
Fixed

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 16.04 LTS
openssh Fixed Fixed Not affected Not affected Not affected
openssh-ssh1 Not affected Not affected Not affected Not affected
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CVE-2023-51767

Medium priority
Ignored

OpenSSH through 9.6, 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 16.04 LTS
openssh Ignored Ignored Ignored Ignored
openssh-ssh1 Ignored Ignored Ignored Not in release
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CVE-2023-51385

Medium priority

Some fixes available 8 of 16

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 16.04 LTS
openssh Fixed Fixed Fixed Fixed Fixed
openssh-ssh1 Vulnerable Vulnerable Vulnerable Vulnerable Not in release
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CVE-2023-51384

Medium priority

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 16.04 LTS
openssh Fixed Fixed Not affected Not affected Not affected
openssh-ssh1 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Not in release
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CVE-2023-48795

Medium priority

Some fixes available 29 of 79

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, filezilla, golang-go.crypto, libssh, libssh2...

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
dropbear Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
filezilla Fixed Fixed Fixed Not affected Not affected
golang-go.crypto Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
libssh Not affected Fixed Fixed Not affected Not affected
libssh2 Not affected Not affected Not affected Not affected Not affected
lxd Not in release Not in release Not affected Fixed Fixed
openssh Fixed Fixed Fixed Fixed Fixed
openssh-ssh1 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Not in release
paramiko Fixed Fixed Fixed Needs evaluation Needs evaluation
proftpd-dfsg Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
putty Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
python-asyncssh Fixed Fixed Fixed Ignored Ignored
snapd Not affected Not affected Not affected Not affected Not affected
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CVE-2023-38408

Medium priority

Some fixes available 9 of 18

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 16.04 LTS
openssh Fixed Fixed Fixed Fixed Fixed
openssh-ssh1 Needs evaluation Needs evaluation Needs evaluation Needs evaluation Not in release
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CVE-2023-28531

Low priority

Some fixes available 2 of 3

ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.

2 affected packages

openssh, openssh-ssh1

Package 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS 16.04 LTS
openssh Fixed Not affected Not affected Not affected
openssh-ssh1 Not affected Not affected Not affected Not in release
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