CVE-2020-15917 Information

Description

common/session.c in Claws Mail before 3.17.6 has a protocol violation because suffix data after STARTTLS is mishandled.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00090.html http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00060.html http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00051.html http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00013.html https://git.claws-mail.org/?p=claws.git;a=blob;f=RELEASE_NOTES https://git.claws-mail.org/?p=claws.git;a=commit;h=fcc25329049b6f9bd8d890f1197ed61eb12e14d5 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6YVQB7NRBHO67Q74RS7RZCMW4ENRVBB4/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G7UX65342HRVDQML4G4GEVEUB764EUM5/ https://security.gentoo.org/glsa/202007-56

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8