// For flags

CVE-2020-28928

Ubuntu Security Notice USN-5990-1

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In musl libc through 1.2.1, wcsnrtombs mishandles particular combinations of destination buffer size and source character limit, as demonstrated by an invalid write access (buffer overflow).

En musl libc versiones hasta 1.2.1, wcsnrtombs maneja inapropiadamente combinaciones particulares de tamaño de búfer de destino y límite de caracteres de origen, como es demostrado por un acceso de escritura no válido (desbordamiento de búfer)

It was discovered that musl did not handle certain i386 math functions properly. An attacker could use this vulnerability to cause a denial of service or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 LTS. It was discovered that musl did not handle wide-character conversion properly. A remote attacker could use this vulnerability to cause resource consumption , denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-11-18 CVE Reserved
  • 2020-11-24 CVE Published
  • 2024-07-24 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Musl-libc
Search vendor "Musl-libc"
 Musl
Search vendor "Musl-libc" for product "Musl"
 <= 1.2.1
Search vendor "Musl-libc" for product "Musl" and version " <= 1.2.1"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 33
Search vendor "Fedoraproject" for product "Fedora" and version "33"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 34
Search vendor "Fedoraproject" for product "Fedora" and version "34"
-
Affected
Oracle
Search vendor "Oracle"
 Graalvm
Search vendor "Oracle" for product "Graalvm"
 20.3.2
Search vendor "Oracle" for product "Graalvm" and version "20.3.2"
enterprise
Affected
Oracle
Search vendor "Oracle"
 Graalvm
Search vendor "Oracle" for product "Graalvm"
 21.1.0
Search vendor "Oracle" for product "Graalvm" and version "21.1.0"
enterprise
Affected