Strix
26.1K

CVE-2018-20834

UnknownEPSS 3.15%

Last modified

CVE-2018-20834 is a vulnerability of currently unknown severity. A vulnerability was found in node-tar before version 4.4.2 (excluding version 2.2.2). An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. EPSS estimates a 3.15% chance of exploitation in the next 30 days.

Description

A vulnerability was found in node-tar before version 4.4.2 (excluding version 2.2.2). An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content. A patch has been applied to node-tar v2.2.2).

Metrics

EPSS Probability
3.15%

86.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
IsaacsTar< 2.2.2
IsaacsTar>= 3.0.0, < 4.4.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-20834?
A vulnerability was found in node-tar before version 4.4.2 (excluding version 2.2.2). An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content. A patch has been applied to node-tar v2.2.2).
How severe is CVE-2018-20834?
Severity scoring for CVE-2018-20834 is pending analysis. The EPSS model estimates a 3.15% probability of exploitation in the next 30 days.
How do I fix CVE-2018-20834?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2018

View all 2018CVEs →

Are you affected by CVE-2018-20834?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST