CVE-2019-3859
Published: 21 March 2019
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. 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 certain specially crafted packets. A remote attacker could possibly use this issue to cause a denial of service or obtain sensitive information.
Priority
Medium
CVSS 3 base score: 9.1
Status
| Package | Release | Status |
|---|---|---|
|
libssh2 Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 21.04 (Hirsute Hippo) |
Not vulnerable
(1.8.0-2.1)
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Not vulnerable
(1.8.0-2.1)
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Needed
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Ignored
(end of standard support, was needed)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Needed
|
Notes
| Author | Note |
|---|---|
| msalvatore | Upstream fix causes regression: https://lists.opensuse.org/opensuse-security-announce/2019-04/msg00102.html Follow up patch: https://github.com/libssh2/libssh2/commit/ca2744483eac4e707084df5fc55cc69d57571dde |