Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2024-47850: CUPS cups-browsed before 2.5b1 will send an HTTP POST request to an arbitrary destination and port in response to a single IPP UDP packet requesting a printer to be added, a different vulnerability than CVE-2024-47176. (The request is meant to probe the new printer but can be used to create DDoS amplification attacks.) CVE-2024-47176: CUPS is a standards-based, open-source printing system, and `cups-browsed` contains network printing functionality including, but not limited to, auto-discovering print services and shared printers. `cups-browsed` binds to `INADDR_ANY:631`, causing it to trust any packet from any source, and can cause the `Get-Printer-Attributes` IPP request to an attacker controlled URL. Due to the service binding to `*:631 ( INADDR_ANY )`, multiple bugs in `cups-browsed` can be exploited in sequence to introduce a malicious printer to the system. This chain of exploits ultimately enables an attacker to execute arbitrary commands remotely on the target machine without authentication when a print job is started. This poses a significant security risk over the network. Notably, this vulnerability is particularly concerning as it can be exploited from the public internet, potentially exposing a vast number of systems to remote attacks if their CUPS services are enabled. CVE-2024-47076: CUPS is a standards-based, open-source printing system, and `libcupsfilters` contains the code of the filters of the former `cups-filters` package as library functions to be used for the data format conversion tasks needed in Printer Applications. The `cfGetPrinterAttributes5` function in `libcupsfilters` does not sanitize IPP attributes returned from an IPP server. When these IPP attributes are used, for instance, to generate a PPD file, this can lead to attacker controlled data to be provided to the rest of the CUPS system.
Fixed packages 6
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | cups-filters | 0:1.28.16-3.amzn2023.0.3 |
| Amazon Linux · 2023 | cups-filters-debuginfo | 0:1.28.16-3.amzn2023.0.3 |
| Amazon Linux · 2023 | cups-filters-debugsource | 0:1.28.16-3.amzn2023.0.3 |
| Amazon Linux · 2023 | cups-filters-devel | 0:1.28.16-3.amzn2023.0.3 |
| Amazon Linux · 2023 | cups-filters-libs | 0:1.28.16-3.amzn2023.0.3 |
| Amazon Linux · 2023 | cups-filters-libs-debuginfo | 0:1.28.16-3.amzn2023.0.3 |
Vulnerabilities 3
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High 8.6
libcupsfilters's cfGetPrinterAttributes5 does not validate IPP attributes returned from an IPP server
CUPS is a standards-based, open-source printing system, and `libcupsfilters` contains the code of the filters of the former `cups-filters` package as library functions to be used for the data format conversion tasks needed in Printer Applications. The `cfGetP…
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High 7.5
CUPS cups-browsed before 2.5b1 will send an HTTP POST request to an arbitrary destination and port in response to a sin…
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Medium 5.3
cups-browsed binds to `INADDR_ANY:631`, trusting any packet from any source
CUPS is a standards-based, open-source printing system, and `cups-browsed` contains network printing functionality including, but not limited to, auto-discovering print services and shared printers. `cups-browsed` binds to `INADDR_ANY:631`, causing it to trus…