Learn about CVE-2017-18248, a vulnerability in CUPS before version 2.2.6 enabling remote attackers to crash the system by submitting print jobs with an invalid username.
CUPS before version 2.2.6 is vulnerable to remote attacks due to a flaw in the add_job function when D-Bus support is enabled. Attackers can cause a crash by submitting print jobs with an invalid username.
Understanding CVE-2017-18248
If D-Bus support is enabled, the add_job function in scheduler/ipp.c of CUPS prior to version 2.2.6 may be vulnerable to remote attackers. By submitting print jobs with an invalid username, attackers can cause a crash due to a D-Bus notification.
What is CVE-2017-18248?
The vulnerability in CUPS allows remote attackers to crash the system by sending print jobs with an invalid username, exploiting the D-Bus notification.
The Impact of CVE-2017-18248
This vulnerability can be exploited by malicious actors to cause a denial of service (DoS) by crashing the CUPS service, disrupting printing capabilities.
Technical Details of CVE-2017-18248
CUPS before version 2.2.6 is susceptible to a remote attack due to a flaw in the add_job function when D-Bus support is enabled.
Vulnerability Description
The add_job function in scheduler/ipp.c of CUPS before 2.2.6, when D-Bus support is enabled, can be crashed by remote attackers by sending print jobs with an invalid username, related to a D-Bus notification.
Affected Systems and Versions
Exploitation Mechanism
Attackers exploit the vulnerability by submitting print jobs with an invalid username, triggering a crash through a D-Bus notification.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2017-18248.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates