CVE-2020-15953

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 v3 7.4 HIGH
CVSS v2.0 5.8 MEDIUM

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:N

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00060.html	Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00075.html	Broken Link
https://github.com/dinhvh/libetpan/issues/386	Exploit Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00026.html	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M65FVH5XPS23NLHFN3ABEGBSCHZAISXN/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QFBWNA5REI5ZGW2DAOEAVHM23MOU6O5J/
https://security.gentoo.org/glsa/202007-55	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:libetpan_project:libetpan:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:a:libmailcore:mailcore2:*:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:31:::::::*
	cpe:2.3:o:fedoraproject:fedora:32:::::::*

Configuration 4 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-07-27 07:15

Updated : 2023-11-07 03:17

NVD link : CVE-2020-15953

Mitre link : CVE-2020-15953

CVE.ORG link : CVE-2020-15953

JSON object : View

Products Affected

libmailcore

mailcore2

fedoraproject

fedora

debian

debian_linux

libetpan_project

libetpan

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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