high
8.8
CWE
416 119
Advisory Published
CVE Published
Updated

CVE-2015-7849: Use After Free

First published: Thu Oct 22 2015(Updated: )

The following flaw was found in ntpd: An exploitable use-after-free vulnerability exists in the password management functionality of the Network Time Protocol. A specially crafted key file could cause a buffer overflow resulting in memory corruption. An attacker could provide a malicious password file to trigger this vulnerability. External References: <a href="http://talosintel.com/reports/TALOS-2015-0054/">http://talosintel.com/reports/TALOS-2015-0054/</a> <a href="http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner">http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner</a>

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/ntp<4.2.8
4.2.8
NTP ntp>=4.2.0<4.2.8
NTP ntp>=4.3.0<4.3.77
NTP ntp=4.2.8
NTP ntp=4.2.8-p1
NTP ntp=4.2.8-p1-beta1
NTP ntp=4.2.8-p1-beta2
NTP ntp=4.2.8-p1-beta3
NTP ntp=4.2.8-p1-beta4
NTP ntp=4.2.8-p1-beta5
NTP ntp=4.2.8-p1-rc1
NTP ntp=4.2.8-p1-rc2
NTP ntp=4.2.8-p2
NTP ntp=4.2.8-p2-rc1
NTP ntp=4.2.8-p2-rc2
NTP ntp=4.2.8-p2-rc3
NTP ntp=4.2.8-p3
NTP ntp=4.2.8-p3-rc1
NTP ntp=4.2.8-p3-rc2
NTP ntp=4.2.8-p3-rc3
NetApp OnCommand Balance
NetApp OnCommand Performance Manager
NetApp OnCommand Unified Manager
NetApp Clustered Data ONTAP
NetApp Data ONTAP 7-Mode

Remedy

http://support.ntp.org/bin/view/Main/NtpBug2916

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2015-7849?

    CVE-2015-7849 is classified as a critical vulnerability due to its potential for remote exploitation leading to memory corruption.

  • How do I fix CVE-2015-7849?

    To fix CVE-2015-7849, you should update the ntp software to version 4.2.8 or later.

  • Which versions are affected by CVE-2015-7849?

    CVE-2015-7849 affects ntp versions prior to 4.2.8 as well as specific beta and release candidates up to version 4.3.77.

  • What type of vulnerability is CVE-2015-7849?

    CVE-2015-7849 is a use-after-free vulnerability found in the password management functionality of the Network Time Protocol.

  • Can I exploit CVE-2015-7849 through any means?

    Yes, an attacker can exploit CVE-2015-7849 by using a specially crafted key file that triggers a buffer overflow.

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