CVE-2020-15953 Information

Description

LibEtPan through 1.9.4 as used in MailCore 2 through 0.6.3 and other products has a STARTTLS buffering issue that affects IMAP SMTP and POP3. When a server sends a \begin TLS\ response the client reads additional data (e.g. from a meddler-in-the-middle attacker) and evaluates it in a TLS context aka \response injection.\

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00060.html http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00075.html https://github.com/dinhvh/libetpan/issues/386 https://lists.debian.org/debian-lts-announce/2020/08/msg00026.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M65FVH5XPS23NLHFN3ABEGBSCHZAISXN/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QFBWNA5REI5ZGW2DAOEAVHM23MOU6O5J/ https://security.gentoo.org/glsa/202007-55

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.4