Vulnerability CVE-2017-12843

Vulnerability Name:

CVE-2017-12843 (CCN-130855)

Assigned:

2017-08-14

Published:

2017-08-14

Updated:

2017-08-26

Summary:

Cyrus IMAP before 3.0.3 allows remote authenticated users to write to arbitrary files via a crafted (1) SYNCAPPLY, (2) SYNCGET or (3) SYNCRESTORE command.

CVSS v3 Severity:

6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): High Availibility (A): None

4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): Low Availibility (A): None

CVSS v2 Severity:

4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

Vulnerability Type:

CWE-20

Vulnerability Consequences:

File Manipulation

References:

Source: MITRE
Type: CNA
CVE-2017-12843

Source: XF
Type: UNKNOWN
cyrus-imap-cve201712843-file-overwrite(130855)

Source: CONFIRM
Type: Third Party Advisory
https://github.com/cyrusimap/cyrus-imapd/commit/53c4137bd924b954432c6c59da7572c4c5ffa901

Source: CONFIRM
Type: Third Party Advisory
https://github.com/cyrusimap/cyrus-imapd/commit/5edadcfb83bf27107578830801817f9e6d0ad941

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2017-f8f4cd5b67

Source: CCN
Type: Cyrus IMAP Web site
Cyrus IMAP 3.0.3 Release Notes

Source: CONFIRM
Type: Release Notes, Vendor Advisory
https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.3.html

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-12843

Vulnerable Configuration:

Configuration 1:

cpe:/a:cyrusimap:cyrus_imap:*:*:*:*:*:*:*:* (Version <= 3.0.2)

Configuration 2:

cpe:/o:fedoraproject:fedora:26:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:cyrus:imap:3.0.2:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.trusty:def:201712843000	V	CVE-2017-12843 on Ubuntu 14.04 LTS (trusty) - medium.	2017-08-22
oval:com.ubuntu.xenial:def:201712843000	V	CVE-2017-12843 on Ubuntu 16.04 LTS (xenial) - medium.	2017-08-22
oval:com.ubuntu.xenial:def:2017128430000000	V	CVE-2017-12843 on Ubuntu 16.04 LTS (xenial) - medium.	2017-08-22

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