Candidate: CVE-2019-3855
PublicDate: 2019-03-21 21:29:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3855
 https://www.libssh2.org/CVE-2019-3855.html
 https://github.com/libssh2/libssh2/pull/315
Description:
 An integer overflow flaw which could lead to an out of bounds write was
 discovered in libssh2 before 1.8.1 in the way packets are read from the
 server. A remote attacker who compromises a SSH server may be able to
 execute code on the client system when a user connects to the server.
Ubuntu-Description:
 It was discovered that libssh2 mishandled certain input. If libssh2 were used
 to connect to a malicious or compromised SSH server, a remote, unauthenticated
 attacker could execute arbitrary code on the client system.
Notes:
Bugs:
Priority: medium
Discovered-by:
Assigned-to: leosilva
CVSS:
 nvd: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H [8.8 HIGH]
 nvd: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H [8.8 HIGH]


Patches_libssh2:
upstream_libssh2: needs-triage
precise/esm_libssh2: DNE
trusty_libssh2: ignored (out of standard support)
trusty/esm_libssh2: needed
xenial_libssh2: ignored (end of standard support, was needed)
bionic_libssh2: needed
cosmic_libssh2: ignored (reached end-of-life)
disco_libssh2: not-affected (1.8.0-2.1)
eoan_libssh2: not-affected (1.8.0-2.1)
focal_libssh2: not-affected (1.8.0-2.1)
groovy_libssh2: not-affected (1.8.0-2.1)
hirsute_libssh2: not-affected (1.8.0-2.1)
impish_libssh2: not-affected (1.8.0-2.1)
jammy_libssh2: not-affected (1.8.0-2.1)
devel_libssh2: not-affected (1.8.0-2.1)