• 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

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 55

 | 

Security Affairs newsletter Round 534 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 

Law enforcement operations seized BlackSuit ransomware gang’s darknet sites

 | 

Arizona woman sentenced for aiding North Korea in U.S. IT job fraud scheme

 | 

Operation CargoTalon targets Russia’s aerospace with EAGLET malware,

 | 

Unpatched flaw in EoL LG LNV5110R cameras lets hackers gain Admin access

 | 

Koske, a new AI-Generated Linux malware appears in the threat landscape

 | 

Mitel patches critical MiVoice MX-ONE Auth bypass flaw

 | 

Coyote malware is first-ever malware abusing Windows UI Automation

 | 

SonicWall fixed critical flaw in SMA 100 devices exploited in Overstep malware attacks

 | 

DSPM & AI Are Booming: $17.87B and $4.8T Markets by 2033

 | 

Stealth backdoor found in WordPress mu-Plugins folder

 | 

U.S. CISA adds CrushFTP, Google Chromium, and SysAid flaws to its Known Exploited Vulnerabilities catalog

 | 

U.S. CISA urges FCEB agencies to fix two Microsoft SharePoint flaws immediately and added them to its Known Exploited Vulnerabilities catalog

 | 

Sophos fixed two critical Sophos Firewall vulnerabilities

 | 

French Authorities confirm XSS.is admin arrested in Ukraine

 | 

Microsoft linked attacks on SharePoint flaws to China-nexus actors

 | 

Cisco confirms active exploitation of ISE and ISE-PIC flaws

 | 

SharePoint under fire: new ToolShell attacks target enterprises

 | 

CrushFTP zero-day actively exploited at least since July 18

 | 
  • 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
  • Breaking News
  • Hacking
  • Security
  • Two Linux flaws can lead to the disclosure of sensitive data

Two Linux flaws can lead to the disclosure of sensitive data

Pierluigi Paganini May 31, 2025

Qualys warns of two information disclosure flaws in apport and systemd-coredump, the core dump handlers in Ubuntu, Red Hat Enterprise Linux, and Fedora distros.

Researchers discovered a vulnerability in Apport (Ubuntu’s core dump handler) and another bug in systemd-coredump, which is used in the default configuration of Red Hat Enterprise Linux 9 and the Fedora distribution.

systemd-coredump automatically captures “core dumps” (snapshots of a program’s memory), when an application crashes. These dumps can be saved or logged in the system journal, making it easier for developers to inspect them later using tools like GDB. While useful for debugging, core dumps often contain sensitive data, so access is restricted to root by default. It’s used in many Linux distributions like Fedora, RHEL 8+, SUSE, and Arch.

Apport is Ubuntu’s built-in crash reporting tool. When an app crashes, Apport collects important details like stack traces, logs, and package info, and creates a report for developers. These reports can sometimes include personal or system data.

“The Qualys Threat Research Unit (TRU) has discovered two local information-disclosure vulnerabilities in Apport and systemd-coredump.” reads the Qualys’s report.

“Both issues are race-condition vulnerabilities. The first (CVE-2025-5054) affects Ubuntu’s core-dump handler, Apport, and the second (CVE-2025-4598) targets systemd-coredump, which is the default core-dump handler on Red Hat Enterprise Linux 9 and the recently released 10, as well as on Fedora. These race conditions allow a local attacker to exploit a SUID program and gain read access to the resulting core dump.”

Both vulnerabilities, tracked as CVE-2025-5054 and CVE-2025-4598 (CVSS score: 4.7), are race condition issues that allow local attackers access to core dumps of crashed SUID programs by quickly replacing the process before the system finishes analyzing it.

“We discovered a vulnerability in apport (Ubuntu’s core-dump handler), and a similar vulnerability in systemd-coredump (which is the default core-dump handler on Red Hat Enterprise Linux 9 and Fedora for example): a race condition that allows a local attacker to crash a SUID program and gain read access to the resulting core dump (by quickly replacing the crashed SUID process with another process, before its /proc/pid/ files are analyzed by the vulnerable core-dump handler).” reads the advisory.

Qualys TRU created POCs to exploit core dumps from the unix_chkpwd process and extract password hashes from the /etc/shadow file on Linux systems.

Apport is vulnerable in Ubuntu 24.04 and all versions since 16.04 (up to version 2.33.0). systemd-coredump is affected in Fedora 40/41, RHEL 9, and RHEL 10. Debian isn’t vulnerable by default.

To prevent data leaks in crashes, set /proc/sys/fs/suid_dumpable to 0 to disables core dumps for SUID programs. It’s a temporary fix if patches aren’t available.

“The exploitation of vulnerabilities in Apport and systemd-coredump can severely compromise the confidentiality at high risk, as attackers could extract sensitive data, like passwords, encryption keys, or customer information from core dumps. The fallout includes operational downtime, reputational damage, and potential non-compliance with regulations.” concludes the report. “To mitigate these multifaceted risks effectively, enterprises should adopt proactive security measures by prioritizing patches and mitigations, enforcing robust monitoring, and tightening access controls.”

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, Linux)


facebook linkedin twitter

Hacking hacking news information security news IT Information Security LINUX Pierluigi Paganini Security Affairs Security News

you might also like

Pierluigi Paganini July 27, 2025
SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 55
Read more
Pierluigi Paganini July 27, 2025
Security Affairs newsletter Round 534 by Pierluigi Paganini – INTERNATIONAL EDITION
Read more

leave a comment

newsletter

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

    recent articles

    SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 55

    Malware / July 27, 2025

    Security Affairs newsletter Round 534 by Pierluigi Paganini – INTERNATIONAL EDITION

    Breaking News / July 27, 2025

    Law enforcement operations seized BlackSuit ransomware gang’s darknet sites

    Cyber Crime / July 26, 2025

    Arizona woman sentenced for aiding North Korea in U.S. IT job fraud scheme

    Intelligence / July 26, 2025

    Operation CargoTalon targets Russia’s aerospace with EAGLET malware,

    Intelligence / July 25, 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