- Vulnerability/
- USN-4086-1
USN-4086-1: Mercurial vulnerability
First published: Tue Aug 06 2019(Updated: )
It was discovered that Mercurial mishandled symlinks in subrepositories. An attacker could use this vulnerability to write arbitrary files to the target's filesystem.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/mercurial | <4.8.2-1ubuntu3.19.04.1 | 4.8.2-1ubuntu3.19.04.1 |
| Ubuntu OpenSSH Client | =19.04 | |
| All of | ||
| ubuntu/mercurial-common | <4.8.2-1ubuntu3.19.04.1 | 4.8.2-1ubuntu3.19.04.1 |
| Ubuntu OpenSSH Client | =19.04 |
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Reference Links
Frequently Asked Questions
What is the severity of USN-4086-1?
The severity of USN-4086-1 is critical due to its ability to allow an attacker to write arbitrary files to the target's filesystem.
How do I fix USN-4086-1?
To fix USN-4086-1, upgrade to the patched version of Mercurial, specifically 4.8.2-1ubuntu3.19.04.1.
Which software is affected by USN-4086-1?
USN-4086-1 affects Mercurial and mercurial-common versions prior to 4.8.2-1ubuntu3.19.04.1 on Ubuntu 19.04.
Can USN-4086-1 be exploited remotely?
Yes, USN-4086-1 can potentially be exploited remotely if an attacker manipulates symlinks in subrepositories.
What are the implications of not addressing USN-4086-1?
Failing to address USN-4086-1 may lead to unauthorized file manipulation on your system, posing significant security risks.
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