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ubuntucveUbuntu.comUB:CVE-2023-26464
HistoryMar 10, 2023 - 12:00 a.m.

CVE-2023-26464

2023-03-1000:00:00
ubuntu.com
ubuntu.com
17
cve-2023-26464
log4j 1.x
chainsaw
socketappender
denial of service
memory exhaustion
virtual machine
deserialization
unsupported
jre less than 1.7
specially-crafted hashmap
specially-crafted hashtable
apache log4j 2.x
update

CVSS3

7.5

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

EPSS

0.002

Percentile

58.8%

UNSUPPORTED WHEN ASSIGNED When using the Chainsaw or SocketAppender
components with Log4j 1.x on JRE less than 1.7, an attacker that manages to
cause a logging entry involving a specially-crafted (ie, deeply nested)
hashmap or hashtable (depending on which logging component is in use) to be
processed could exhaust the available memory in the virtual machine and
achieve Denial of Service when the object is deserialized. This issue
affects Apache Log4j before 2. Affected users are recommended to update to
Log4j 2.x. NOTE: This vulnerability only affects products that are no
longer supported by the maintainer.

CVSS3

7.5

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

EPSS

0.002

Percentile

58.8%