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USN-5102-1: Mercurial vulnerabilities

4 October 2021

Several security issues were fixed in Mercurial.

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Releases

Packages

  • mercurial - easy-to-use, scalable distributed version control system

Details

It was discovered that Mercurial mishandled symlinks in subrepositories. An
attacker could use this issue to write arbitrary files to the
target’s filesystem. (CVE-2019-3902)

It was discovered that Mercurial incorrectly handled certain manifest files.
An attacker could use this issue to cause a denial of service and possibly
execute arbitrary code. (CVE-2018-17983)

Reduce your security exposure

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 18.04

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

References

Related notices

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Further reading