CVE-2018-10933
CriticalPublic exploitlibssh - security update
Published Jan 8, 2021 · Updated Aug 4, 2026 · Also known as ALPINE-CVE-2018-10933, DEBIAN-CVE-2018-10933, DLA-1548-1, DSA-4322-1, SUSE-SU-2018:3162-1, SUSE-SU-2018:3253-1, TR-21-0005, UBUNTU-CVE-2018-10933, USN-3795-1
Key Facts
Patch immediately- CVE-2018-10933 is a critical-severity vulnerability (CVSS 9.1 v3.1) affecting Libssh, Oncommand Unified Manager (Netapp), Oncommand Workflow Automation (Netapp) and 13 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 92% probability of exploitation in the next 30 days.
- Fixed versions are available, including cockpit 0:176-4.el7, Libssh 0:0.7.1-7.el7, Libssh 0.6.1-0ubuntu3.4.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
9.1
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS (30-day exploit likelihood)
92%
Higher than 99.8% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2018-10933 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4. A malicious client could create channels without first performing authentication, resulting in unauthorized access.
Affected Products
82 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| LibsshLibssh | >= 0.7.6 | 0.7.6 |
| Oncommand Unified ManagerNetapp | See advisory | n/a |
| Oncommand Workflow AutomationNetapp | See advisory | n/a |
| SnapcenterNetapp | See advisory | n/a |
| Storage Automation StoreNetapp | See advisory | n/a |
Patched Releases
cockpit
0:176-4.el7
Libssh
0:0.7.1-7.el7, 0.6.1-0ubuntu3.4, 0.6.3-12.6.1, 0.6.3-17.1, 0.6.3-4.3ubuntu0.1, 0.6.3-4+deb8u3, 0.7.3-2+deb9u1, 0.7.5-6.3.1, 0.7.5-lp150.5.3.1, 0.7.6-r0, 0.8.0~20170825.94fa1e38-1ubuntu0.1, 0.8.4-1, 0.7.6
libssh-config
0.9.6-1.2
libssh-devel
0.6.3-12.6.1, 0.6.3-17.1, 0.7.5-6.3.1, 0.7.5-lp150.5.3.1, 0.9.6-1.2
libssh-devel-doc
0.6.3-12.6.1, 0.6.3-17.1, 0.7.5-lp150.5.3.1
libssh4
0.6.3-12.6.1, 0.6.3-17.1, 0.7.5-6.3.1, 0.7.5-lp150.5.3.1, 0.9.6-1.2
libssh4-32bit
0.6.3-17.1, 0.7.5-6.3.1, 0.7.5-lp150.5.3.1, 0.9.6-1.2
Mysql Workbench
<=8.0.13
rootio-libssh
0.8.4-1
Timeline
Publicly disclosed
Jan 8, 2021
Last updated
Aug 4, 2026
Weakness Type
- CWE-287 Improper Authentication
- CWE-592 DEPRECATED: Authentication Bypass Issues
References
- advisoryRHBA-2018:3712
- advisoryhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10933
- advisoryhttps://bugzilla.suse.com/1108020
- advisory[debian-lts-announce] 20181018 [SECURITY] [DLA 1548-1] libssh security update
- advisoryhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0016
FAQ
Common Questions.
A vulnerability was found in libssh's server-side state machine before versions 0.7.6 and 0.8.4.
Affected: Libssh versions >= 0.7.6; Oncommand Unified Manager (Netapp); Oncommand Workflow Automation (Netapp), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including cockpit 0:176-4.el7, Libssh 0:0.7.1-7.el7, Libssh 0.6.1-0ubuntu3.4.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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