5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.967 High
EPSS
Percentile
99.6%
Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and
2.3.1) did not protect from uncontrolled recursion from self-referential
lookups. This allows an attacker with control over Thread Context Map data
to cause a denial of service when a crafted string is interpreted. This
issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | apache-log4j2 | < 2.12.4-0ubuntu0.1 | UNKNOWN |
ubuntu | 20.04 | noarch | apache-log4j2 | < 2.17.0-0.20.04.1 | UNKNOWN |
ubuntu | 21.04 | noarch | apache-log4j2 | < 2.17.0-0.21.04.1 | UNKNOWN |
ubuntu | 21.10 | noarch | apache-log4j2 | < 2.17.0-0.21.10.1 | UNKNOWN |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45105
launchpad.net/bugs/cve/CVE-2021-45105
logging.apache.org/log4j/2.x/security.html#CVE-2021-45105
nvd.nist.gov/vuln/detail/CVE-2021-45105
security-tracker.debian.org/tracker/CVE-2021-45105
ubuntu.com/security/notices/USN-5203-1
ubuntu.com/security/notices/USN-5222-1
wiki.ubuntu.com/SecurityTeam/KnowledgeBase/Log4Shell
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.967 High
EPSS
Percentile
99.6%