CVE-2020-28023 Common Vulnerabilities and Exposures

Upstream information

CVE-2020-28023 at MITRE

Description

Exim 4 before 4.94.2 allows Out-of-bounds Read. smtp_setup_msg may disclose sensitive information from process memory to an unauthenticated SMTP client.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having critical severity.

CVSS v2 Scores
CVSS detail	National Vulnerability Database
Base Score	5
Vector	AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector	Network
Access Complexity	Low
Authentication	None
Confidentiality Impact	Partial
Integrity Impact	None
Availability Impact	None

CVSS v3 Scores
CVSS detail	National Vulnerability Database
Base Score	7.5
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality Impact	High
Integrity Impact	None
Availability Impact	None
CVSSv3 Version	3.1

SUSE Bugzilla entry: 1185631 [RESOLVED / FIXED]

SUSE Security Advisories:

openSUSE-SU-2021:0677-1, published Fri May 7 15:38:31 2021
openSUSE-SU-2021:0753-1, published Thu May 20 15:39:10 2021
openSUSE-SU-2021:0754-1, published Thu May 20 15:39:10 2021

List of released packages

Product(s)	Fixed package version(s)	References
SUSE Package Hub 15 SP1	`exim >= 4.94.2-bp151.2.4.1` `eximon >= 4.94.2-bp151.2.4.1` `eximstats-html >= 4.94.2-bp151.2.4.1` `libspf2-2 >= 1.2.10-bp151.4.1` `libspf2-devel >= 1.2.10-bp151.4.1` `libspf2-tools >= 1.2.10-bp151.4.1`	Patchnames: openSUSE-2021-753
SUSE Package Hub 15 SP2	`exim >= 4.94.2-bp152.6.4.1` `eximon >= 4.94.2-bp152.6.4.1` `eximstats-html >= 4.94.2-bp152.6.4.1` `libspf2-2 >= 1.2.10-bp152.5.1` `libspf2-devel >= 1.2.10-bp152.5.1` `libspf2-tools >= 1.2.10-bp152.5.1`	Patchnames: openSUSE-2021-754
openSUSE Leap 15.2	`exim >= 4.94.2-lp152.8.3.1` `eximon >= 4.94.2-lp152.8.3.1` `eximstats-html >= 4.94.2-lp152.8.3.1`	Patchnames: openSUSE-2021-677
openSUSE Tumbleweed	`exim >= 4.94.2-4.2` `eximon >= 4.94.2-4.2` `eximstats-html >= 4.94.2-4.2`	Patchnames: openSUSE-Tumbleweed-2024-10746

SUSE Timeline for this CVE

CVE page created: Wed May 5 08:38:42 2021
CVE page last modified: Sat Nov 1 22:11:15 2025