Red Hat update for evolution

1) Improper Neutralization of Special Elements in Output Used by a Downstream Component

EUVDB-ID: #VU34139

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-14928

CWE-ID: CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

evolution-data-server (eds) through 3.36.3 has a STARTTLS buffering issue that affects SMTP and POP3. When a server sends a "begin TLS" response, eds reads additional data and evaluates it in a TLS context, aka "response injection."

Mitigation

Install updates from vendor's website.

Vulnerable software versions

evolution-data-server (Red Hat package): 3.28.5-11.el8 - 3.28.5-13.el8

evolution (Red Hat package): 3.28.5-9.el8 - 3.28.5-12.el8

openchange (Red Hat package): 2.3-24.el8

Red Hat CodeReady Linux Builder for ARM 64: 8.0

Red Hat CodeReady Linux Builder for Power, little endian: 8.0

Red Hat CodeReady Linux Builder for x86_64: 8.0

Red Hat Enterprise Linux for ARM 64: 8

Red Hat Enterprise Linux for Power, little endian: 8

Red Hat Enterprise Linux for IBM z Systems: 8

Red Hat Enterprise Linux for x86_64: 8.0

evolution-mapi (Red Hat package): before 3.28.3-3.el8

bogofilter (Red Hat package): before 1.2.5-2.el8

External links

http://access.redhat.com/errata/RHSA-2020:4649

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.