USN-7378-1: Ghostscript vulnerabilities

27 March 2025

Several security issues were fixed in Ghostscript.

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Details

It was discovered that Ghostscript incorrectly serialized DollarBlend in
certain fonts. An attacker could use this issue to cause Ghostscript to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2025-27830)

It was discovered that Ghostscript incorrectly handled the DOCXWRITE
TXTWRITE device. An attacker could use this issue to cause Ghostscript to
crash, resulting in a denial of service, or possibly execute arbitrary
code. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and
Ubuntu 24.10. (CVE-2025-27831)

It was discovered that Ghostscript incorrectly handled the NPDL device. An
attacker could use this issue to cause Ghostscript to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2025-27832)

It was discovered that Ghostscript incorrectly handled certain long TTF
file names. An attacker could use this issue to cause Ghostscript to
crash, resulting in a denial of service, or possibly execute arbitrary
code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 24.10.
(CVE-2025-27833)

It was discovered that Ghostscript incorrectly handled oversized Type 4
functions in certain PDF documents. An attacker could use this issue to
cause Ghostscript to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only affected Ubuntu 22.04 LTS, Ubuntu
24.04 LTS, and Ubuntu 24.10. (CVE-2025-27834)

It was discovered that Ghostscript incorrectly handled converting certain
glyphs to Unicode. An attacker could use this issue to cause Ghostscript to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2025-27835)

It was discovered that Ghostscript incorrectly handled the BJ10V device. An
attacker could use this issue to cause Ghostscript to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2025-27836)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 24.10
Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04

In general, a standard system update will make all the necessary changes.

References

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