CVE-2018-10933
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 91.78% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 99.8% of scored records. A rank, not a probability.
- NVD base score
- 9.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-10-17 12:00Z8 YR AGO
- Last updated
- 2024-08-05 07:54Z2 YR AGO
- Reserved
- 2018-05-09
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.1)
- CNA CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- Data version
- 5.1
- Document digest
- abb0ccaca44e6f20e7f0305b85d82a5b48a9fb96d8c24546763a51f3bd757df8
05 Affected products
06 References
- usn.ubuntu.comUSN-3795-1https://usn.ubuntu.com/3795-1/
- www.oracle.comhttps://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
- usn.ubuntu.comUSN-3795-2https://usn.ubuntu.com/3795-2/
- www.debian.orgDSA-4322https://www.debian.org/security/2018/dsa-4322
- www.exploit-db.com45638https://www.exploit-db.com/exploits/45638/
- www.libssh.orghttps://www.libssh.org/security/advisories/CVE-2018-10933.txt
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10933
- www.securityfocus.com105677http://www.securityfocus.com/bid/105677
- lists.debian.org[debian-lts-announce] 20181018 [SECURITY] [DLA 1548-1] libssh security updatehttps://lists.debian.org/debian-lts-announce/2018/10/msg00010.html
- psirt.global.sonicwall.comhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0016
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20190118-0002/
07 Fixed in
Arch Linux
- libssh Fixed in 0.8.4-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- libssh Fixed in 0.8.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libssh Fixed in 0.8.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libssh Fixed in 0.8.4-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- libssh Fixed in 0.6.1-0ubuntu3.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- libssh Fixed in 0.6.3-4.3ubuntu0.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- libssh Fixed in 0.8.0~20170825.94fa1e38-1ubuntu0.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.