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github.com/ulikunitz/xz fixes readUvarint Denial of Service (DoS)

High severity GitHub Reviewed Published Aug 19, 2020 in ulikunitz/xz • Updated May 31, 2024

Package

gomod github.com/ulikunitz/xz (Go)

Affected versions

< 0.5.8

Patched versions

0.5.8

Description

Impact

xz is a compression and decompression library focusing on the xz format completely written in Go. The function readUvarint used to read the xz container format may not terminate a loop provide malicous input.

Patches

The problem has been fixed in release v0.5.8.

Workarounds

Limit the size of the compressed file input to a reasonable size for your use case.

References

The standard library had recently the same issue and got the CVE-2020-16845 allocated.

For more information

If you have any questions or comments about this advisory:

  • Open an issue in xz.

References

@ulikunitz ulikunitz published to ulikunitz/xz Aug 19, 2020
Published by the National Vulnerability Database Apr 28, 2021
Reviewed May 24, 2021
Published to the GitHub Advisory Database May 25, 2021
Last updated May 31, 2024

Severity

High
7.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CVE ID

CVE-2021-29482

GHSA ID

GHSA-25xm-hr59-7c27

Source code

No known source code

Credits

Checking history
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