Improper Neutralization of Special Elements in Output Used by a Downstream Component in Debian Linux

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

EUVDB-ID: #VU34139

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

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 update from vendor's website.

Vulnerable software versions

Debian Linux: 9.0 - 10.0

CPE2.3

• cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

External links

https://bugzilla.suse.com/show_bug.cgi?id=1173910
https://gitlab.gnome.org/GNOME//evolution-data-server/commit/ba82be72cfd427b5d72ff21f929b3a6d8529c4df
https://gitlab.gnome.org/GNOME/evolution-data-server/-/commit/f404f33fb01b23903c2bbb16791c7907e457fbac
https://gitlab.gnome.org/GNOME/evolution-data-server/-/issues/226
https://lists.debian.org/debian-lts-announce/2020/07/msg00012.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QMBEZWA22EAYAZQWUX4KPEBER726KSIG/
https://security-tracker.debian.org/tracker/DLA-2281-1
https://security-tracker.debian.org/tracker/DSA-4725-1
https://usn.ubuntu.com/4429-1/
https://www.debian.org/security/2020/dsa-4725

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.