CVE-2021-29482 denial of service in github.com/ulikunitz/xz

2021-04-2818:15:15

CWE-835

GitHub_M

www.cve.org

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

7.8 High

AI Score

Confidence

High

0.037 Low

EPSS

Percentile

91.9%

JSON

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. The problem has been fixed in release v0.5.8. As a workaround users can limit the size of the compressed file input to a reasonable size for their use case. The standard library had recently the same issue and got the CVE-2020-16845 allocated.

CNA Affected

[
  {
    "product": "xz",
    "vendor": "ulikunitz",
    "versions": [
      {
        "status": "affected",
        "version": "< 0.5.8"
      }
    ]
  }
]