UbuntuUSN-5379-1klibc vulnerabilities
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
9.3 High
AI Score
Confidence
High
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
0.007 Low
EPSS
Percentile
79.3%
Releases
- Ubuntu 20.04 LTS
- Ubuntu 18.04 ESM
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Packages
- klibc - small utilities built with klibc for early boot
Details
It was discovered that klibc did not properly perform
some mathematical operations, leading to an integer overflow.
An attacker could possibly use this issue to cause a crash,
resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2021-31870)
It was discovered that klibc did not properly handled some
memory allocations on 64 bit systems. An attacker could
possibly use this issue to cause a crash, resulting in a
denial of service, or possibly execute arbitrary code.
(CVE-2021-31871)
It was discovered that klibc did not properly handled some file
sizes values on 32 bit systems. An attacker could possibly use
this issue to cause a crash, resulting in a denial of service,
or possibly execute arbitrary code. (CVE-2021-31872)
It was discovered that klibc did not properly handled some
memory allocations. An attacker could possibly use this issue
to cause a crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2021-31873)
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Ubuntu | 20.04 | noarch | klibc-utils | < 2.0.7-1ubuntu5.1 | UNKNOWN |
| Ubuntu | 20.04 | noarch | klibc-utils-dbgsym | < 2.0.7-1ubuntu5.1 | UNKNOWN |
| Ubuntu | 20.04 | noarch | libklibc | < 2.0.7-1ubuntu5.1 | UNKNOWN |
| Ubuntu | 20.04 | noarch | libklibc-dbgsym | < 2.0.7-1ubuntu5.1 | UNKNOWN |
| Ubuntu | 20.04 | noarch | libklibc-dev | < 2.0.7-1ubuntu5.1 | UNKNOWN |
| Ubuntu | 18.04 | noarch | klibc-utils | < 2.0.4-9ubuntu2.1 | UNKNOWN |
| Ubuntu | 18.04 | noarch | libklibc | < 2.0.4-9ubuntu2.1 | UNKNOWN |
| Ubuntu | 18.04 | noarch | libklibc-dev | < 2.0.4-9ubuntu2.1 | UNKNOWN |
| Ubuntu | 16.04 | noarch | klibc-utils | < 2.0.4-8ubuntu1.16.04.4+esm1 | UNKNOWN |
| Ubuntu | 16.04 | noarch | klibc-utils | < 2.0.4-8ubuntu1.16.04.4 | 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
9.3 High
AI Score
Confidence
High
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
0.007 Low
EPSS
Percentile
79.3%