GLSA-202007-56 : Claws Mail: Improper STARTTLS handling

High Nessus Plugin ID 139119


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-202007-56 (Claws Mail: Improper STARTTLS handling)

It was discovered that Claws Mail was not properly handling state within the STARTTLS protocol handshake.
Impact :

There may be a breach of integrity or confidentiality in connections made using Claws Mail with STARTTLS.
Workaround :

There is no known workaround at this time.


All Claws Mail users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=mail-client/claws-mail-3.17.6'

See Also

Plugin Details

Severity: High

ID: 139119

File Name: gentoo_GLSA-202007-56.nasl

Version: 1.2

Type: local

Published: 2020/07/30

Updated: 2020/08/03

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:claws-mail, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/07/28

Vulnerability Publication Date: 2020/07/23

Reference Information

CVE: CVE-2020-15917

GLSA: 202007-56