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SSH servers which implement file transfer protocols are vulnerable to a denial of service attack from clients which complete the key exchange slowly, or not at all, causing pending content to be read into memory, but never transmitted.
3 affected packages
golang-go.crypto, lxd, snapd
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| golang-go.crypto | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| lxd | Not in release | Not in release | Not in release | Not affected | Not affected |
| snapd | Not affected | Not affected | Not affected | Not affected | Not affected |
Some fixes available 3 of 47
A certificate with a URI which has a IPv6 address with a zone ID may incorrectly satisfy a URI name constraint that applies to the certificate chain. Certificates containing URIs are not permitted in the web PKI, so this only...
18 affected packages
golang, golang-1.10, golang-1.13, golang-1.14, golang-1.16...
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| golang | Not in release | Not in release | Not in release | Not in release | — |
| golang-1.10 | Not in release | Not in release | Not in release | Not in release | Needs evaluation |
| golang-1.13 | Not in release | Not in release | Needs evaluation | Needs evaluation | Needs evaluation |
| golang-1.14 | Not in release | Not in release | Not in release | Needs evaluation | — |
| golang-1.16 | Not in release | Not in release | Not in release | Needs evaluation | Needs evaluation |
| golang-1.17 | Not in release | Not in release | Needs evaluation | Not in release | — |
| golang-1.18 | Not in release | Not in release | Needs evaluation | Needs evaluation | Needs evaluation |
| golang-1.20 | Not in release | Not in release | Needs evaluation | Needs evaluation | — |
| golang-1.21 | Not in release | Needs evaluation | Needs evaluation | Needs evaluation | — |
| golang-1.22 | Not in release | Fixed | Fixed | Needs evaluation | — |
| golang-1.23 | Not affected | Needs evaluation | Needs evaluation | Not in release | — |
| golang-1.24 | Needs evaluation | Needs evaluation | Needs evaluation | Not in release | — |
| golang-1.6 | Not in release | Not in release | Not in release | Not in release | — |
| golang-1.8 | Not in release | Not in release | Not in release | Not in release | Needs evaluation |
| golang-1.9 | Not in release | Not in release | Not in release | Not in release | Needs evaluation |
| golang-go.crypto | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| lxd | Not in release | Not in release | Not in release | Not affected | Needs evaluation |
| snapd | Not affected | Not affected | Not affected | Not affected | Not affected |
Some fixes available 13 of 17
An attacker can craft an input to the Parse functions that would be processed non-linearly with respect to its length, resulting in extremely slow parsing. This could cause a denial of service.
7 affected packages
adsys, containerd, golang-golang-x-net, golang-golang-x-net-dev, google-guest-agent...
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| adsys | Fixed | Fixed | Fixed | Fixed | — |
| containerd | Not affected | Not affected | Not affected | Not affected | Not affected |
| golang-golang-x-net | Vulnerable | Fixed | Fixed | Not in release | — |
| golang-golang-x-net-dev | Not in release | Not in release | Not in release | Fixed | Fixed |
| google-guest-agent | Not affected | Not affected | Not affected | Not affected | Not affected |
| juju-core | Not in release | Not in release | Not in release | Not in release | — |
| lxd | Not in release | Not in release | Not in release | Not affected | Not affected |
Some fixes available 11 of 16
Applications and libraries which misuse connection.serverAuthenticate (via callback field ServerConfig.PublicKeyCallback) may be susceptible to an authorization bypass. The documentation for ServerConfig.PublicKeyCallback says...
4 affected packages
golang-go.crypto, google-guest-agent, lxd, snapd
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| golang-go.crypto | Not affected | Fixed | Fixed | Fixed | Fixed |
| google-guest-agent | Not affected | Fixed | Fixed | Fixed | Fixed |
| lxd | Not in release | Not in release | Not in release | Not affected | Needs evaluation |
| snapd | Not affected | Not affected | Not affected | Not affected | Not affected |
Mark Laing discovered in LXD's PKI mode, until version 5.21.1, that a restricted certificate could be added to the trust store with its restrictions not honoured.
1 affected package
lxd
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| lxd | Not in release | Not in release | Not in release | Needs evaluation | Needs evaluation |
Mark Laing discovered that LXD's PKI mode, until version 5.21.2, could be bypassed if the client's certificate was present in the trust store.
1 affected package
lxd
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| lxd | Not in release | Not in release | Not in release | Needs evaluation | Needs evaluation |
An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD. This allows an OS-resident attacker to bypass Secure Boot.
1 affected package
lxd
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| lxd | — | Not in release | Not in release | Not affected | Not affected |
Some fixes available 46 of 95
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 | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| dropbear | Needs evaluation | Needs evaluation | Fixed | Fixed | Fixed |
| filezilla | Fixed | Fixed | Fixed | Fixed | Not affected |
| golang-go.crypto | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| libssh | Not affected | Not affected | Fixed | Fixed | Not affected |
| libssh2 | Not affected | Not affected | Not affected | Not affected | Not affected |
| lxd | Not in release | Not in release | Not in release | Not affected | Fixed |
| openssh | Fixed | Fixed | Fixed | Fixed | Fixed |
| openssh-ssh1 | Ignored | Ignored | Ignored | Ignored | Ignored |
| paramiko | Fixed | Fixed | Fixed | Fixed | Needs evaluation |
| proftpd-dfsg | Needs evaluation | Not affected | Not affected | Fixed | Needs evaluation |
| putty | Not affected | Needs evaluation | Needs evaluation | Needs evaluation | Needs evaluation |
| python-asyncssh | Fixed | Fixed | Fixed | Fixed | Ignored |
| snapd | Not affected | Not affected | Not affected | Not affected | Not affected |
Some fixes available 8 of 12
Text nodes not in the HTML namespace are incorrectly literally rendered, causing text which should be escaped to not be. This could lead to an XSS attack.
7 affected packages
adsys, containerd, golang-golang-x-net, golang-golang-x-net-dev, google-guest-agent...
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| adsys | Not affected | Not affected | Not affected | Fixed | — |
| containerd | Not affected | Not affected | Not affected | Not affected | Not affected |
| golang-golang-x-net | Not affected | Not affected | Fixed | Not in release | Ignored |
| golang-golang-x-net-dev | Not in release | Not in release | Not in release | Fixed | Fixed |
| google-guest-agent | Not affected | Not affected | Not affected | Not affected | Not affected |
| juju-core | Not in release | Not in release | Not in release | — | — |
| lxd | Not in release | Not in release | Not in release | Not affected | Fixed |
Some fixes available 23 of 38
A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of service from a small number of small requests.
20 affected packages
adsys, containerd, golang, golang-1.10, golang-1.13...
| Package | 26.04 LTS | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
|---|---|---|---|---|---|
| adsys | Not affected | Not affected | Not affected | Fixed | — |
| containerd | Not affected | Not affected | Not affected | Not affected | Not affected |
| golang | Not in release | Not in release | Not in release | Not in release | Not in release |
| golang-1.10 | Not in release | Not in release | Not in release | Not in release | Vulnerable |
| golang-1.13 | Not in release | Not in release | Vulnerable | Vulnerable | Vulnerable |
| golang-1.14 | Not in release | Not in release | Not in release | Vulnerable | Not in release |
| golang-1.16 | Not in release | Not in release | Not in release | Vulnerable | Vulnerable |
| golang-1.17 | Not in release | Not in release | Fixed | Not in release | Not in release |
| golang-1.18 | Not in release | Not in release | Fixed | Fixed | Fixed |
| golang-1.19 | Not in release | Not in release | Not in release | Not in release | Not in release |
| golang-1.20 | Not in release | Not in release | Not affected | Not affected | Not in release |
| golang-1.21 | Not in release | Not affected | Not affected | Not affected | Not in release |
| golang-1.6 | Not in release | Not in release | Not in release | Not in release | Not in release |
| golang-1.8 | Not in release | Not in release | Not in release | Not in release | Vulnerable |
| golang-1.9 | Not in release | Not in release | Not in release | Not in release | Vulnerable |
| golang-golang-x-net | Not affected | Not affected | Fixed | Not in release | Not in release |
| golang-golang-x-net-dev | Not in release | Not in release | Not in release | Fixed | Fixed |
| google-guest-agent | Fixed | Fixed | Fixed | Fixed | Fixed |
| juju-core | Not in release | Not in release | Not in release | — | — |
| lxd | Not in release | Not in release | Not in release | Not affected | Fixed |