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Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.
4 affected packages
golang-go.crypto, snapd, lxd, google-guest-agent
| Package | 22.04 LTS |
|---|---|
| golang-go.crypto | Needs evaluation |
| snapd | Needs evaluation |
| lxd | Not in release |
| google-guest-agent | Needs evaluation |
SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking...
4 affected packages
golang-go.crypto, snapd, lxd, google-guest-agent
| Package | 22.04 LTS |
|---|---|
| golang-go.crypto | Needs evaluation |
| snapd | Needs evaluation |
| lxd | Not in release |
| google-guest-agent | Needs evaluation |
When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making progress....
4 affected packages
golang-go.crypto, snapd, lxd, google-guest-agent
| Package | 22.04 LTS |
|---|---|
| golang-go.crypto | Needs evaluation |
| snapd | Needs evaluation |
| lxd | Not in release |
| google-guest-agent | Needs evaluation |
The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that...
4 affected packages
golang-go.crypto, snapd, lxd, google-guest-agent
| Package | 22.04 LTS |
|---|---|
| golang-go.crypto | Needs evaluation |
| snapd | Needs evaluation |
| lxd | Not in release |
| google-guest-agent | Needs evaluation |
When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted...
4 affected packages
golang-go.crypto, snapd, lxd, google-guest-agent
| Package | 22.04 LTS |
|---|---|
| golang-go.crypto | Needs evaluation |
| snapd | Needs evaluation |
| lxd | Not in release |
| google-guest-agent | Needs evaluation |
The Verify() method for FIDO/U2F security key types (sk-ecdsa-sha2-nistp256@openssh.com, sk-ssh-ed25519@openssh.com) did not check the User Presence flag. Signatures generated without physical touch were accepted, allowing...
4 affected packages
golang-go.crypto, snapd, lxd, google-guest-agent
| Package | 22.04 LTS |
|---|---|
| golang-go.crypto | Needs evaluation |
| snapd | Needs evaluation |
| lxd | Not in release |
| google-guest-agent | Needs evaluation |
A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per...
4 affected packages
golang-go.crypto, snapd, lxd, google-guest-agent
| Package | 22.04 LTS |
|---|---|
| golang-go.crypto | Needs evaluation |
| snapd | Needs evaluation |
| lxd | Not in release |
| google-guest-agent | Needs evaluation |
The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during...
4 affected packages
golang-go.crypto, snapd, lxd, google-guest-agent
| Package | 22.04 LTS |
|---|---|
| golang-go.crypto | Needs evaluation |
| snapd | Needs evaluation |
| lxd | Not in release |
| google-guest-agent | Needs evaluation |
When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor...
4 affected packages
golang-go.crypto, snapd, lxd, google-guest-agent
| Package | 22.04 LTS |
|---|---|
| golang-go.crypto | Needs evaluation |
| snapd | Needs evaluation |
| lxd | Not in release |
| google-guest-agent | Needs evaluation |
An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now...
4 affected packages
golang-go.crypto, snapd, lxd, google-guest-agent
| Package | 22.04 LTS |
|---|---|
| golang-go.crypto | Needs evaluation |
| snapd | Needs evaluation |
| lxd | Not in release |
| google-guest-agent | Needs evaluation |