Candidate: CVE-2019-3856
PublicDate: 2019-03-25 19:29:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3856
 https://www.libssh2.org/CVE-2019-3856.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 keyboard prompt requests are
 parsed. 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 incorrectly handled prompt requests. A
 remote attacker could possibly use this issue to execute arbitrary code.
Notes:
Bugs:
Priority: medium
Discovered-by:
Assigned-to:
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)