CLSA-2026-1784725535

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Import Source
https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1784725535.json
JSON Data
https://api.osv.dev/v1/vulns/CLSA-2026-1784725535
Upstream
CVE (2)
Published
2026-07-22T13:06:03Z
Modified
2026-10-26T09:32:05Z
Summary
Fix CVE(s): CVE-2026-59999, CVE-2026-60000
Details
  • SECURITY UPDATE: DisableForwarding did not override PermitTunnel
    • debian/patches/CVE-2026-59999.patch: add options.disable_forwarding to the PermitTunnel gate in server_request_tun() in serverloop.c so that DisableForwarding=yes rejects tunnel-device forwarding as documented.
    • CVE-2026-59999
  • SECURITY UPDATE: GSSAPI userauth pre-auth resource DoS / MaxAuthTries bypass
    • debian/patches/CVE-2026-60000.patch: discard the client error token in input_gssapi_errtok() instead of feeding it to ssh_gssapi_accept_ctx(), and record the failed attempt via userauth_finish() so GSSAPI auth is subject to MaxAuthTries, in auth2-gss.c.
    • CVE-2026-60000
References

Affected packages

TuxCare:Ubuntu:20.04
openssh-client

Package

Name
openssh-client
Purl
pkg:deb/tuxcare/openssh-client?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:8.2p1-4ubuntu0.13+tuxcare.els4

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1784725535.json"
openssh-server

Package

Name
openssh-server
Purl
pkg:deb/tuxcare/openssh-server?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:8.2p1-4ubuntu0.13+tuxcare.els4

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1784725535.json"
openssh-sftp-server

Package

Name
openssh-sftp-server
Purl
pkg:deb/tuxcare/openssh-sftp-server?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:8.2p1-4ubuntu0.13+tuxcare.els4

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1784725535.json"
openssh-tests

Package

Name
openssh-tests
Purl
pkg:deb/tuxcare/openssh-tests?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:8.2p1-4ubuntu0.13+tuxcare.els4

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1784725535.json"
ssh

Package

Name
ssh
Purl
pkg:deb/tuxcare/ssh?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:8.2p1-4ubuntu0.13+tuxcare.els4

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1784725535.json"
ssh-askpass-gnome

Package

Name
ssh-askpass-gnome
Purl
pkg:deb/tuxcare/ssh-askpass-gnome?distro=ubuntu-20.04

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:8.2p1-4ubuntu0.13+tuxcare.els4

Database specific

source 
"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1784725535.json"