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githubGitHub Advisory DatabaseGHSA-25XM-HR59-7C27
HistoryMay 25, 2021 - 6:39 p.m.

github.com/ulikunitz/xz fixes readUvarint denial of service

2021-05-2518:39:37
CWE-835
GitHub Advisory Database
github.com
32

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

42.2%

JSON

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.
CPENameOperatorVersion
github.com/ulikunitz/xzlt0.5.8

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7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

42.2%

JSON
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