• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

New Batavia spyware targets Russian industrial enterprises

 | 

Taiwan flags security risks in popular Chinese apps after official probe

 | 

U.S. CISA adds Google Chromium V8 flaw to its Known Exploited Vulnerabilities catalog

 | 

Hunters International ransomware gang shuts down and offers free decryption keys to all victims

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 52

 | 

Security Affairs newsletter Round 531 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 

North Korea-linked threat actors spread macOS NimDoor malware via fake Zoom updates

 | 

Critical Sudo bugs expose major Linux distros to local Root exploits

 | 

Google fined $314M for misusing idle Android users' data

 | 

A flaw in Catwatchful spyware exposed logins of +62,000 users

 | 

China-linked group Houken hit French organizations using zero-days

 | 

Cybercriminals Target Brazil: 248,725 Exposed in CIEE One Data Breach

 | 

Europol shuts down Archetyp Market, longest-running dark web drug marketplace

 | 

Kelly Benefits data breach has impacted 550,000 people, and the situation continues to worsen as the investigation progresses

 | 

Cisco removed the backdoor account from its Unified Communications Manager

 | 

U.S. Sanctions Russia's Aeza Group for aiding crooks with bulletproof hosting

 | 

Qantas confirms customer data breach amid Scattered Spider attacks

 | 

CVE-2025-6554 is the fourth Chrome zero-day patched by Google in 2025

 | 

U.S. CISA adds TeleMessage TM SGNL flaws to its Known Exploited Vulnerabilities catalog

 | 

A sophisticated cyberattack hit the International Criminal Court

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Uncategorized
  • Cisco warns of a ClamAV bug with PoC exploit

Cisco warns of a ClamAV bug with PoC exploit

Pierluigi Paganini January 26, 2025

Cisco addressed a ClamAV denial-of-service (DoS) vulnerability, and experts warn of the availability of a proof-of-concept (PoC) exploit code.

Cisco has released security updates to address a ClamAV denial-of-service (DoS) vulnerability tracked as CVE-2025-20128. The Cisco PSIRT experts warn of the availability of a proof-of-concept (PoC) exploit code for this flaw.

The vulnerability resides in the Object Linking and Embedding 2 (OLE2) decryption routine of ClamAV. An unauthenticated, remote attacker could exploit the flaw to cause a denial of service (DoS) condition on a vulnerable device.

Cisco ClamAV (Clam AntiVirus) is an open-source antivirus engine designed to detect malware, viruses, and other malicious threats. It is widely used for email scanning, file scanning, and web security, particularly in Linux-based systems.

“This vulnerability is due to an integer underflow in a bounds check that allows for a heap buffer overflow read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 content to be scanned by ClamAV on an affected device.” reads the advisory. “A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software.”

The Medium-impact vulnerability affects Linux, Mac, and Windows, potentially crashing scans and delaying or halting scanning operations.

The vulnerability impacts the following products:

Affected Cisco Software PlatformCVSS Base ScoreSecurity Impact RatingCisco Bug IDFirst Fixed Release
Secure Endpoint Connector for Linux6.9MediumCSCwm897781.25.1
Secure Endpoint Connector for Mac6.9MediumCSCwm897791.24.4
Secure Endpoint Connector for Windows6.9MediumCSCwm897817.5.20
8.4.3
Secure Endpoint Private Cloud6.9MediumCSCwm915824.2.0 with updated connectors

The Cisco PSIRT is not aware of attacks in the wild exploiting this vulnerability.

Google OSS-Fuzz reported this vulnerability.

In February 2023, Cisco fixed a critical flaw, tracked as CVE-2023-20032 (CVSS score: 9.8), in ClamAV product. The vulnerability resides in the HFS+ file parser component, an attacker can trigger the issue to gain remote code execution on vulnerable devices or trigger a DoS condition.

Tracked as CVE-2023-20032 (CVSS score: 9.8), the issue relates to a case of remote code execution residing in the HFS+ file parser.

The flaw affects versions 1.0.0 and earlier, 0.105.1 and earlier, and 0.103.7 and earlier. The company acknowledged Simon Scannell from Google for reporting this issue.

The vulnerability is a buffer overflow issue affecting the ClamAV scanning library, it is due to a missing buffer size check.

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, ClamAV)


facebook linkedin twitter

you might also like

Pierluigi Paganini July 07, 2025
New Batavia spyware targets Russian industrial enterprises
Read more
Pierluigi Paganini July 03, 2025
Kelly Benefits data breach has impacted 550,000 people, and the situation continues to worsen as the investigation progresses
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    New Batavia spyware targets Russian industrial enterprises

    Uncategorized / July 07, 2025

    Taiwan flags security risks in popular Chinese apps after official probe

    Security / July 07, 2025

    U.S. CISA adds Google Chromium V8 flaw to its Known Exploited Vulnerabilities catalog

    Hacking / July 07, 2025

    Hunters International ransomware gang shuts down and offers free decryption keys to all victims

    Cyber Crime / July 06, 2025

    SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 52

    Security / July 06, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT