CVE-2023-7102Barracuda ESG Appliance Vulnerability
Use of a Third Party library produced a vulnerability in Barracuda Networks Inc.
Published Dec 28, 2023 · Updated Aug 2, 2024 · Also known as TR-23-0738
Key Facts
Patch immediately- CVE-2023-7102 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Email Security Gateway 300 Firmware (Barracuda), Email Security Gateway 400 Firmware (Barracuda), Email Security Gateway 600 Firmware (Barracuda) and 3 more products.
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Dec 24, 2023. Public exploit code is available.
- EPSS estimates a 45% probability of exploitation in the next 30 days.
- Fixed versions are available, including Email Security Gateway 300 Firmware <=9.2.1.001, Email Security Gateway 400 Firmware <=9.2.1.001, Email Security Gateway 600 Firmware <=9.2.1.001.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
45%
Higher than 98.7% of all scored CVEs
Exploit maturity
Weaponized
ATLAS score
60/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Dec 24, 2023
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Weaponized
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
4
Reports of active use
Advisories And Exploit References
- advisoryhttps://www.cve.org/CVERecord?id=CVE-2023-7102
- advisoryhttps://github.com/haile01/perl_spreadsheet_excel_rce_poc
- advisoryhttps://github.com/mandiant/Vulnerability-Disclosures/blob/master/2023/MNDT-2023-0019.md
- advisoryVulnCheck exploitation report
- advisoryhttps://www.bleepingcomputer.com/news/security/barracuda-fixes-new-esg-zero-day-exploited-by-chinese-hackers/
- advisoryUSOM advisory
Description
Use of a Third Party library produced a vulnerability in Barracuda Networks Inc. Barracuda ESG Appliance which allowed Parameter Injection.This issue affected Barracuda ESG Appliance, from 5.1.3.001 through 9.2.1.001, until Barracuda removed the vulnerable logic.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Dec 24, 2023 | n/a | Not reported |
| Industry KEV feed | Dec 24, 2023 | n/a | Not reported |
Affected Products
6 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Email Security Gateway 300 FirmwareBarracuda | See advisory | 9.2.1.001 |
| Email Security Gateway 400 FirmwareBarracuda | See advisory | 9.2.1.001 |
| Email Security Gateway 600 FirmwareBarracuda | See advisory | 9.2.1.001 |
| Email Security Gateway 800 FirmwareBarracuda | See advisory | 9.2.1.001 |
| Email Security Gateway 900 FirmwareBarracuda | See advisory | 9.2.1.001 |
Patched Releases
Email Security Gateway 300 Firmware
<=9.2.1.001
Email Security Gateway 400 Firmware
<=9.2.1.001
Email Security Gateway 600 Firmware
<=9.2.1.001
Email Security Gateway 800 Firmware
<=9.2.1.001
Email Security Gateway 900 Firmware
<=9.2.1.001
Timeline
Added to CIRCL KEV
Dec 24, 2023
Added to Industry KEV feed
Dec 24, 2023
Publicly disclosed
Dec 28, 2023
Last updated
Aug 2, 2024
Weakness Type
- CWE-1104 Use of Unmaintained Third Party Components
References
- advisorycve.org · CVERecord
- advisorygithub.com · perl_spreadsheet_excel_rce_poc
- advisorygithub.com · MNDT-2023-0019.md
- advisoryVulnCheck exploitation report
- advisorybleepingcomputer.com · barracuda-fixes-new-esg-zero-day-exploited-by-c…
FAQ
Common Questions.
Use of a Third Party library produced a vulnerability in Barracuda Networks Inc.
Affected: Email Security Gateway 300 Firmware (Barracuda); Email Security Gateway 400 Firmware (Barracuda); Email Security Gateway 600 Firmware (Barracuda), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Dec 24, 2023.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Email Security Gateway 300 Firmware <=9.2.1.001, Email Security Gateway 400 Firmware <=9.2.1.001, Email Security Gateway 600 Firmware <=9.2.1.001.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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