- Vulnerability/
- USN-6585-1
15/1/2024
USN-6585-1: libssh2 vulnerability
First published: Mon Jan 15 2024(Updated: )
Fabian Bäumer, Marcus Brinkmann, Jörg Schwenk discovered that the SSH protocol was vulnerable to a prefix truncation attack. If a remote attacker was able to intercept SSH communications, extension negotiation messages could be truncated, possibly leading to certain algorithms and features being downgraded. This issue is known as the Terrapin attack. This update adds protocol extensions to mitigate this issue.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/libssh2-1 | <1.11.0-2ubuntu0.1 | 1.11.0-2ubuntu0.1 |
| Ubuntu Ubuntu | =23.10 |
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Reference Links
- https://ubuntu.com/security/CVE-2023-48795
- https://ubuntu.com/security/notices/USN-6560-1
- https://ubuntu.com/security/notices/USN-6561-1
- https://ubuntu.com/security/notices/USN-6560-2
- https://ubuntu.com/security/notices/USN-6589-1
- https://ubuntu.com/security/notices/USN-6598-1
- https://ubuntu.com/security/notices/USN-6738-1
- https://launchpad.net/ubuntu/+source/libssh2/1.11.0-2ubuntu0.1
- https://ubuntu.com/security/notices/USN-6585-1 (Advisory)
- agent/severity
- agent/last-modified-date
- agent/type
- agent/first-publish-date
- agent/title
- agent/description
- agent/softwarecombine
- agent/event
- agent/references
- agent/tags
- collector/usn
- source/Ubuntu
- anchor-related/USN-6560-1
- anchor-related/USN-6561-1
- anchor-related/USN-6560-2
- anchor-related/USN-6589-1
- anchor-related/USN-6598-1
- anchor-related/USN-6738-1
- agent/software-canonical-lookup
- package-manager/ubuntu
- vendor/ubuntu
- canonical/ubuntu ubuntu
- version/ubuntu ubuntu/23.10