Known Exploited Vulnerability
9.8
CRITICAL
CVE-2020-15069
Sophos XG Firewall Buffer Overflow Vulnerability - [Actively Exploited]
Description

Sophos XG Firewall 17.x through v17.5 MR12 allows a Buffer Overflow and remote code execution via the HTTP/S Bookmarks feature for clientless access. Hotfix HF062020.1 was published for all firewalls running v17.x.

INFO

Published Date :

June 29, 2020, 6:15 p.m.

Last Modified :

Feb. 7, 2025, 2 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Sophos XG Firewall contains a buffer overflow vulnerability that allows for remote code execution via the "HTTP/S bookmark" feature.

Required Action :

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notes :

https://community.sophos.com/b/security-blog/posts/advisory-buffer-overflow-vulnerability-in-user-portal ; https://nvd.nist.gov/vuln/detail/CVE-2020-15069

Public PoC/Exploit Available at Github

CVE-2020-15069 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-15069 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 Sophos xg_firewall_firmware
2 Sophos xg_firewall
: Total Affected Vendor : 1 | Products : 2
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-2020-15069.

URL Resource
https://community.sophos.com/b/security-blog/posts/advisory-buffer-overflow-vulnerability-in-user-portal Mitigation Vendor Advisory
https://community.sophos.com/b/security-blog/posts/advisory-buffer-overflow-vulnerability-in-user-portal Mitigation Vendor Advisory

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).

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CryptoGenNepal/CVE-KEV-RSS

CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild and CryptoGen Nepal aims to simplify this for the general public in a more understandable way as well as in a format that can be easily integrated into their threat intelligence systems.

cve json rss cgn cisa kev

Python HTML

Updated: 4 days, 20 hours ago
0 stars 0 fork 0 watcher
Born at : Feb. 16, 2025, 5:21 p.m. This repo has been linked 10 different CVEs too.

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

The following list is the news that have been mention CVE-2020-15069 vulnerability anywhere in the article.

  • The Hacker News
XE Hacker Group Exploits VeraCore Zero-Day to Deploy Persistent Web Shells

Threat actors have been observed exploiting multiple security flaws in various software products, including Progress Telerik UI for ASP.NET AJAX and Advantive VeraCore, to drop reverse shells and web ... Read more

Published Date: Feb 10, 2025 (1 week, 5 days ago)
CVE-2025-25181 CVE-2024-57968 CVE-2025-0411 CVE-2024-21413 CVE-2022-23748 CVE-2020-29574 CVE-2020-15069 CVE-2019-18935 CVE-2017-9248
  • The Register
DeepSeek's iOS app is a security nightmare, and that's before you consider its TikTok links

Infosec In Brief DeepSeek’s iOS app is a security nightmare that you should delete ASAP, according to researchers at mobile app infosec platform vendor NowSecure. The org have assessed the security of ... Read more

Published Date: Feb 10, 2025 (1 week, 5 days ago)
CVE-2025-0994 CVE-2024-45195 CVE-2024-21413 CVE-2020-29574 CVE-2020-15069 CVE-2018-19410
  • The Hacker News
FBI Seeks Public Help to Identify Chinese Hackers Behind Global Cyber Intrusions

The U.S. Federal Bureau of Investigation (FBI) has sought assistance from the public in connection with an investigation involving the breach of edge devices and computer networks belonging to compani ... Read more

Published Date: Nov 05, 2024 (3 months, 2 weeks ago)
CVE-2022-3236 CVE-2022-1040 CVE-2020-29574 CVE-2020-15069 CVE-2020-12271

The following table lists the changes that have been made to the CVE-2020-15069 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 CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Feb. 07, 2025

    Action Type Old Value New Value
    Added Date Added 2025-02-06
    Added Due Date 2025-02-27
    Added Required Action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
    Added Vulnerability Name Sophos XG Firewall Buffer Overflow Vulnerability
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Feb. 06, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-120
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://community.sophos.com/b/security-blog/posts/advisory-buffer-overflow-vulnerability-in-user-portal
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Jul. 16, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    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://community.sophos.com/b/security-blog/posts/advisory-buffer-overflow-vulnerability-in-user-portal No Types Assigned https://community.sophos.com/b/security-blog/posts/advisory-buffer-overflow-vulnerability-in-user-portal Mitigation, Vendor Advisory
    Added CWE NIST CWE-120
    Added CPE Configuration AND OR *cpe:2.3:o:sophos:xg_firewall_firmware:*:*:*:*:*:*:*:* versions from (including) 17.0 up to (excluding) 17.5 *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:-:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release1:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release10:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release11:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release12:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release3:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release4:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release5:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release6:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release7:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release8:*:*:*:*:*:* *cpe:2.3:o:sophos:xg_firewall_firmware:17.5:maintenance_release9:*:*:*:*:*:* OR cpe:2.3:h:sophos:xg_firewall:-:*:*:*:*:*:*:*
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-2020-15069 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-2020-15069 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-92: Forced Integer Overflow Forced Integer Overflow CAPEC-100: Overflow Buffers Overflow Buffers
Exploit Prediction

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

7.51 }} 6.50%

score

0.94146

percentile

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