CVE-2019-3862
Publication date 21 March 2019
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit status message and no payload are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
From the Ubuntu Security Team
It was discovered that libssh2 incorrectly handled SSH_MSG_CHANNEL_REQUEST packets. A remote attacker could possibly use this issue to cause a denial of service or obtain sensitive information.
Status
Package | Ubuntu Release | Status |
---|---|---|
libssh2 | 24.04 LTS noble |
Not affected
|
22.04 LTS jammy |
Not affected
|
|
20.04 LTS focal |
Not affected
|
|
18.04 LTS bionic |
Vulnerable
|
|
16.04 LTS xenial |
Fixed 1.5.0-2ubuntu0.1+esm1
|
|
14.04 LTS trusty |
Fixed 1.4.3-2ubuntu0.2+esm2
|
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Get Ubuntu ProSeverity score breakdown
Parameter | Value |
---|---|
Base score | 9.1 · Critical |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-5308-1
- libssh2 vulnerabilities
- 7 March 2022