9.8
CRITICAL
CVE-2023-48307
Nextcloud Mail SSRF Vulnerability
Description

Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. Starting in version 1.13.0 and prior to version 2.2.8 and 3.3.0, an attacker can use an unprotected endpoint in the Mail app to perform a SSRF attack. Nextcloud Mail app versions 2.2.8 and 3.3.0 contain a patch for this issue. As a workaround, disable the mail app.

INFO

Published Date :

Nov. 21, 2023, 11:15 p.m.

Last Modified :

Nov. 21, 2024, 8:31 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2023-48307 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Nextcloud nextcloud_server
2 Nextcloud mail
3 Nextcloud notes
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-48307.

URL Resource
https://github.com/nextcloud/mail/pull/8709 Issue Tracking Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4pp4-m8ph-2999 Vendor Advisory
https://hackerone.com/reports/1869714 Permissions Required
https://github.com/nextcloud/mail/pull/8709 Issue Tracking Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4pp4-m8ph-2999 Vendor Advisory
https://hackerone.com/reports/1869714 Permissions Required

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-48307 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-48307 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/nextcloud/mail/pull/8709
    Added Reference https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4pp4-m8ph-2999
    Added Reference https://hackerone.com/reports/1869714
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Nov. 30, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://github.com/nextcloud/mail/pull/8709 No Types Assigned https://github.com/nextcloud/mail/pull/8709 Issue Tracking, Patch
    Changed Reference Type https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4pp4-m8ph-2999 No Types Assigned https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4pp4-m8ph-2999 Vendor Advisory
    Changed Reference Type https://hackerone.com/reports/1869714 No Types Assigned https://hackerone.com/reports/1869714 Permissions Required
    Added CPE Configuration OR *cpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:* versions from (including) 1.13.0 up to (excluding) 2.2.8 *cpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.3.0
  • CVE Received by [email protected]

    Nov. 21, 2023

    Action Type Old Value New Value
    Added Description Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. Starting in version 1.13.0 and prior to version 2.2.8 and 3.3.0, an attacker can use an unprotected endpoint in the Mail app to perform a SSRF attack. Nextcloud Mail app versions 2.2.8 and 3.3.0 contain a patch for this issue. As a workaround, disable the mail app.
    Added Reference GitHub, Inc. https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4pp4-m8ph-2999 [No types assigned]
    Added Reference GitHub, Inc. https://github.com/nextcloud/mail/pull/8709 [No types assigned]
    Added Reference GitHub, Inc. https://hackerone.com/reports/1869714 [No types assigned]
    Added CWE GitHub, Inc. CWE-918
    Added CVSS V3.1 GitHub, Inc. AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-48307 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-48307 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.12 }} 0.04%

score

0.48245

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability