CVE-2023-24805highCWE-78

CVE-2023-24805: high-severity vulnerability in OpenPrinting cups-filters

Command injection in cups-filters

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.8epss 3.7%
In short

The cups-filters printing service has a command injection flaw in its network printer handler that allows attackers to run arbitrary system commands remotely. An attacker with network access to a print server can inject malicious commands that execute with the server's privileges.

Technical detail

CVE-2023-24805 is a command injection vulnerability (CWE-78) in cups-filters' Backend Error Handler (beh.c), where unsanitized user-controlled input is passed directly to system() without proper validation. An attacker with network access to the print server can inject shell metacharacters in printer configuration parameters to achieve remote code execution in the server process context. The vulnerability was patched in commit 8f2740357.

Summary generated and translated by AI from the official description.
cups-filters contains backends, filters, and other software required to get the cups printing service working on operating systems other than macos. If you use the Backend Error Handler (beh) to create an accessible network printer, this security vulnerability can cause remote code execution. `beh.c` contains the line `retval = system(cmdline) >> 8;` which calls the `system` command with the operand `cmdline`. `cmdline` contains multiple user controlled, unsanitized values. As a result an attacker with network access to the hosted print server can exploit this vulnerability to inject system commands which are executed in the context of the running server. This issue has been addressed in commit `8f2740357` and is expected to be bundled in the next release. Users are advised to upgrade when possible and to restrict access to network printers in the meantime.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
OpenPrinting · cups-filters
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