Heap Buffer Overflow Vulnerability in gnuplot: CVE-2025-31177
Summary
CVE-2025-31177: gnuplot is affected by a heap buffer overflow at function utf8_copy_one. Affects gnuplot versions 5.4.1+dfsg1-1 – 6.0.3+dfsg1-1~exp2. No fix is published. How to fix ↓
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Background
Gnuplot is a portable command-line driven graphing utility that is widely used for plotting mathematical functions and data. It supports various output formats and is commonly utilized in academic and scientific environments. The package is known for its flexibility and ability to generate high-quality graphics. However, it has been identified to have a vulnerability that could lead to severe security issues.
Vulnerability Detail
CVE-2025-31177 is a heap buffer overflow vulnerability found in the utf8_copy_one function of gnuplot. This vulnerability arises from improper handling of UTF-8 encoded strings, which can lead to memory corruption. If exploited, it could allow an attacker to execute arbitrary code, potentially compromising the integrity and confidentiality of the system. The vulnerability affects multiple versions of gnuplot across different Debian ecosystems.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can avoid using features that involve UTF-8 string processing until the package is updated. Additionally, running gnuplot in a controlled environment or sandbox may help mitigate risks until a fix is applied.
Conclusion
The CVE-2025-31177 vulnerability in gnuplot poses significant risks due to its potential for memory corruption and arbitrary code execution. Users are strongly advised to update their gnuplot installations to the latest patched version to ensure system security. For those unable to update immediately, temporary workarounds are available.
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FAQ
CVE-2025-31177 is a heap buffer overflow vulnerability in gnuplot that can lead to memory corruption and potential code execution.
You can check if your version is affected by using the Vulert playground at Vulert Scanner, which allows you to monitor vulnerabilities without needing to sign up.
The risks include potential arbitrary code execution, which could compromise system security and data integrity.
Yes, a patched version of gnuplot is available. Users should update to the latest version to mitigate the vulnerability.
If immediate updates are not possible, consider using workarounds such as avoiding UTF-8 string processing features or running gnuplot in a sandboxed environment.
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