Ubuntu.comUB:CVE-2021-3520CVE-2021-3520
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.001 Low
EPSS
Percentile
50.3%
There’s a flaw in lz4. An attacker who submits a crafted file to an
application linked with lz4 may be able to trigger an integer overflow,
leading to calling of memmove() on a negative size argument, causing an
out-of-bounds write and/or a crash. The greatest impact of this flaw is to
availability, with some potential impact to confidentiality and integrity
as well.
Bugs
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | lz4 | < 0.0~r131-2ubuntu3.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | lz4 | < 1.9.2-2ubuntu0.20.04.1 | UNKNOWN |
| ubuntu | 20.10 | noarch | lz4 | < 1.9.2-2ubuntu0.20.10.1 | UNKNOWN |
| ubuntu | 21.04 | noarch | lz4 | < 1.9.3-1ubuntu0.1 | UNKNOWN |
| ubuntu | 14.04 | noarch | lz4 | < 0.0~r114-2ubuntu1+esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
| ubuntu | 16.04 | noarch | lz4 | < 0.0~r131-2ubuntu2+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.001 Low
EPSS
Percentile
50.3%