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Ubuntu 18.04 LTS: USN-5102-1 Critical Mercurial Security Flaws

ubuntu
Calendar Grey October 4, 2021
Dist Ubuntu Esm H88
Multiple security issues resolved in Mercurial for Ubuntu 18.04 LTS. Recommended to update for improved safety.
Several security issues were fixed in Mercurial.

Summary

Several security issues were fixed in Mercurial.

Software Description:

- 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)

Topics%20covered

Topics Covered

security advisory denial of service ubuntu mercurial arbitrary file write

Update Instructions

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

Ubuntu 18.04 LTS:
  mercurial                       4.5.3-1ubuntu2.2
  mercurial-common                4.5.3-1ubuntu2.2

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

References

https://ubuntu.com/security/notices/USN-5102-1

CVE-2018-17983, CVE-2019-3902

Severity
critical
Lowest
Low
Medium
High
Critical

October 04, 2021

Topics%20covered

Topics Covered

security advisory denial of service ubuntu mercurial arbitrary file write

Package Information

https://launchpad.net/ubuntu/+source/mercurial/4.5.3-1ubuntu2.2

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