Synacor Zimbra Collaboration Suite up to 8.7.11p9 mailboxd xml external entity reference

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Synacor Zimbra Collaboration Suite up to 8.7.11p9. This impacts an unknown function of the component mailboxd. Such manipulation leads to xml external entity reference. This vulnerability is documented as CVE-2019-9670. The attack can be executed remotely. Additionally, an exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Synacor Zimbra Collaboration Suite up to 8.7.11p9 (Groupware Software) and classified as critical. Affected by this issue is an unknown function of the component mailboxd. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability. CVE summarizes:

mailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p10 has an XML External Entity injection (XXE) vulnerability, as demonstrated by Autodiscover/Autodiscover.xml.

The bug was discovered 04/11/2019. The weakness was released 05/29/2019 as EDB-ID 46693 as not defined exploit (Exploit-DB). The advisory is shared for download at exploit-db.com. This vulnerability is handled as CVE-2019-9670 since 03/11/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

After immediately, there has been an exploit disclosed. The exploit is available at exploit-db.com. It is declared as attacked. The vulnerability was handled as a non-public zero-day exploit for at least 48 days. During that time the estimated underground price was around $0-$5k. This issue was added on 01/10/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 07/10/2022:

Apply updates per vendor instructions.

Applying the patch 8.7.11p9 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Exploit-DB (46693). Entry connected to this vulnerability is available at VDB-134245. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Download: 🔍

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EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
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Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: 8.7.11p9

Timelineinfo

03/11/2019 🔍
04/11/2019 +31 days 🔍
05/29/2019 +48 days 🔍
05/29/2019 +0 days 🔍
05/29/2019 +0 days 🔍
05/30/2019 +1 days 🔍
11/04/2025 +2350 days 🔍

Sourcesinfo

Vendor: synacor.com

Advisory: EDB-ID 46693
Status: Confirmed

CVE: CVE-2019-9670 (🔍)
GCVE (CVE): GCVE-0-2019-9670
GCVE (VulDB): GCVE-100-135716
OSVDB: - Zimbra Collaboration Suite Proxy Servlet server-side request forgery

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 05/30/2019 09:49
Updated: 11/04/2025 18:00
Changes: 05/30/2019 09:49 (50), 06/17/2020 09:54 (19), 04/22/2024 12:58 (29), 07/24/2024 22:19 (3), 09/09/2024 22:29 (1), 02/25/2025 02:42 (5), 11/04/2025 18:00 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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