01 Record

CVE-2022-23307

A deserialization flaw in the Chainsaw component of Log4j 1 can lead to malicious code execution.

HighPUBLISHEDCNA: apache

CNA base score8.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

A deserialization flaw in the Chainsaw component of Log4j 1 can lead to malicious code execution.

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

54.41% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 98.9% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2022-01-18 15:25Z4 YR AGO

Last updated

2026-05-27 13:44Z5 MO AGO

Reserved

2022-01-17

Assigning CNA

apache

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-502Deserialization of Untrusted DataBase

Data version

5.2

Document digest

a9dfb266f240deb367e8b3f3ef565a18f733f5fd4fb9b01464b2d060ac4725ed

05 Affected products

VendorProductVersionsPlatforms

Apache Software FoundationApache Log4j 1.x1.2.1 to < unspecified, <= 2.0-alpha1—

06 References

logging.apache.orghttps://logging.apache.org/log4j/1.2/index.htmlx_refsource_MISC
lists.apache.orghttps://lists.apache.org/thread/rg4yyc89vs3dw6kpy3r92xop9loywyhhx_refsource_MISC
www.oracle.comhttps://www.oracle.com/security-alerts/cpuapr2022.htmlx_refsource_MISC
www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2022.htmlx_refsource_MISC

07 Fixed in

AlmaLinux 8

parfait
Fixed

A version is affected if any line below covers it.
- Affected before 0.5.4-4.module_el8.5.0+235+62ea7738
- Affected before 0.5.4-4.module_el8.5.0+2610+de2b8c0b
parfait-examples
Fixed

A version is affected if any line below covers it.
- Affected before 0.5.4-4.module_el8.5.0+235+62ea7738
- Affected before 0.5.4-4.module_el8.5.0+2610+de2b8c0b
parfait-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 0.5.4-4.module_el8.5.0+235+62ea7738
- Affected before 0.5.4-4.module_el8.5.0+2610+de2b8c0b
pcp-parfait-agent
Fixed

A version is affected if any line below covers it.
- Affected before 0.5.4-4.module_el8.5.0+235+62ea7738
- Affected before 0.5.4-4.module_el8.5.0+2610+de2b8c0b
si-units
Fixed

A version is affected if any line below covers it.
- Affected before 0.6.5-2.module_el8.5.0+235+62ea7738
- Affected before 0.6.5-2.module_el8.5.0+2610+de2b8c0b
si-units-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 0.6.5-2.module_el8.5.0+235+62ea7738
- Affected before 0.6.5-2.module_el8.5.0+2610+de2b8c0b
unit-api
Fixed

A version is affected if any line below covers it.
- Affected before 1.0-5.module_el8.5.0+235+62ea7738
- Affected before 1.0-5.module_el8.5.0+2610+de2b8c0b
unit-api-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 1.0-5.module_el8.5.0+235+62ea7738
- Affected before 1.0-5.module_el8.5.0+2610+de2b8c0b
uom-lib
Fixed

A version is affected if any line below covers it.
- Affected before 1.0.1-6.module_el8.5.0+235+62ea7738
- Affected before 1.0.1-6.module_el8.5.0+2610+de2b8c0b
uom-lib-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 1.0.1-6.module_el8.5.0+235+62ea7738
- Affected before 1.0.1-6.module_el8.5.0+2610+de2b8c0b
uom-parent
Fixed

A version is affected if any line below covers it.
- Affected before 1.0.3-3.module_el8.5.0+235+62ea7738
- Affected before 1.0.3-3.module_el8.5.0+2610+de2b8c0b
uom-se
Fixed

A version is affected if any line below covers it.
- Affected before 1.0.4-3.module_el8.5.0+235+62ea7738
- Affected before 1.0.4-3.module_el8.5.0+2610+de2b8c0b
uom-se-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 1.0.4-3.module_el8.5.0+235+62ea7738
- Affected before 1.0.4-3.module_el8.5.0+2610+de2b8c0b
uom-systems
Fixed

A version is affected if any line below covers it.
- Affected before 0.7-1.module_el8.5.0+235+62ea7738
- Affected before 0.7-1.module_el8.5.0+2610+de2b8c0b
uom-systems-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 0.7-1.module_el8.5.0+235+62ea7738
- Affected before 0.7-1.module_el8.5.0+2610+de2b8c0b

CloudLinux 8

parfait
Fixed

A version is affected if any line below covers it.
- Affected before 0.5.4-4.module_el8.5.0+235+62ea7738
- Affected before 0.5.4-4.module_el8.5.0+2610+de2b8c0b
parfait-examples
Fixed

A version is affected if any line below covers it.
- Affected before 0.5.4-4.module_el8.5.0+235+62ea7738
- Affected before 0.5.4-4.module_el8.5.0+2610+de2b8c0b
parfait-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 0.5.4-4.module_el8.5.0+235+62ea7738
- Affected before 0.5.4-4.module_el8.5.0+2610+de2b8c0b
pcp-parfait-agent
Fixed

A version is affected if any line below covers it.
- Affected before 0.5.4-4.module_el8.5.0+235+62ea7738
- Affected before 0.5.4-4.module_el8.5.0+2610+de2b8c0b
si-units
Fixed

A version is affected if any line below covers it.
- Affected before 0.6.5-2.module_el8.5.0+235+62ea7738
- Affected before 0.6.5-2.module_el8.5.0+2610+de2b8c0b
si-units-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 0.6.5-2.module_el8.5.0+235+62ea7738
- Affected before 0.6.5-2.module_el8.5.0+2610+de2b8c0b
unit-api
Fixed

A version is affected if any line below covers it.
- Affected before 1.0-5.module_el8.5.0+235+62ea7738
- Affected before 1.0-5.module_el8.5.0+2610+de2b8c0b
unit-api-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 1.0-5.module_el8.5.0+235+62ea7738
- Affected before 1.0-5.module_el8.5.0+2610+de2b8c0b
uom-lib
Fixed

A version is affected if any line below covers it.
- Affected before 1.0.1-6.module_el8.5.0+235+62ea7738
- Affected before 1.0.1-6.module_el8.5.0+2610+de2b8c0b
uom-lib-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 1.0.1-6.module_el8.5.0+235+62ea7738
- Affected before 1.0.1-6.module_el8.5.0+2610+de2b8c0b
uom-parent
Fixed

A version is affected if any line below covers it.
- Affected before 1.0.3-3.module_el8.5.0+235+62ea7738
- Affected before 1.0.3-3.module_el8.5.0+2610+de2b8c0b
uom-se
Fixed

A version is affected if any line below covers it.
- Affected before 1.0.4-3.module_el8.5.0+235+62ea7738
- Affected before 1.0.4-3.module_el8.5.0+2610+de2b8c0b
uom-se-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 1.0.4-3.module_el8.5.0+235+62ea7738
- Affected before 1.0.4-3.module_el8.5.0+2610+de2b8c0b
uom-systems
Fixed

A version is affected if any line below covers it.
- Affected before 0.7-1.module_el8.5.0+235+62ea7738
- Affected before 0.7-1.module_el8.5.0+2610+de2b8c0b
uom-systems-javadoc
Fixed

A version is affected if any line below covers it.
- Affected before 0.7-1.module_el8.5.0+235+62ea7738
- Affected before 0.7-1.module_el8.5.0+2610+de2b8c0b

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Debian 12

apache-log4j1.2
Fixed in 1.2.17-11

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

apache-log4j1.2
Fixed in 1.2.17-11

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

apache-log4j1.2
Fixed in 1.2.17-11

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

apache-log4j1.2
Fixed in 1.2.17-8+deb10u1ubuntu0.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

apache-log4j1.2
Fixed in 1.2.17-9ubuntu0.2

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

apache-log4j1.2
Fixed in 1.2.17-4ubuntu3+esm2
Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

apache-log4j1.2
Fixed in 1.2.17-7ubuntu1+esm1
Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.