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NVD / CVE Program· CNA apache

CVE-2022-23307: A deserialization flaw in the Chainsaw component of Log4j 1 can lead to malicious code execution.

Noroxi assessment

Priority: Plan (action score 51/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 54.4% (FIRST EPSS); higher than 99% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: parfait (AlmaLinux:8) 0.5.4-4.module_el8.5.0+2610+de2b8c0b, 0.5.4-4.module_el8.5.0+235+62ea7738; parfait-examples (AlmaLinux:8) 0.5.4-4.module_el8.5.0+235+62ea7738, 0.5.4-4.module_el8.5.0+2610+de2b8c0b; parfait-javadoc (AlmaLinux:8) 0.5.4-4.module_el8.5.0+235+62ea7738, 0.5.4-4.module_el8.5.0+2610+de2b8c0b.
  • Mentioned 5 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Add it to your regular patch cycle. Upgrade to parfait (AlmaLinux:8) 0.5.4-4.module_el8.5.0+2610+de2b8c0b, 0.5.4-4.module_el8.5.0+235+62ea7738; parfait-examples (AlmaLinux:8) 0.5.4-4.module_el8.5.0+235+62ea7738, 0.5.4-4.module_el8.5.0+2610+de2b8c0b; parfait-javadoc (AlmaLinux:8) 0.5.4-4.module_el8.5.0+235+62ea7738, 0.5.4-4.module_el8.5.0+2610+de2b8c0b or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw. Prior to Chainsaw V2.0 Chainsaw was a component of Apache Log4j 1.2.x where the same issue exists.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Jan 18, 2022
Updated
Jun 17, 2026
EPSS
54.4% · 99th percentile

Report tools

JSON

Action score

51

Plan

Add it to your regular patch cycle.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
16 / 30 · 54.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-23307

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
apachechainsaw
apachelog4j
qosreload4j
oracleadvanced supply chain planning
oraclebusiness intelligence
oraclebusiness process management suite
oraclecommunications eagle ftp table base retrieval
oraclecommunications instant messaging server
oraclecommunications messaging server
oraclecommunications network integrity
oraclecommunications offline mediation controller
oraclecommunications unified inventory management

and 14 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apache chainsawbefore 2.1.0
  • apache log4j1.2 and later · before 2.0
  • oracle advanced supply chain planning12.1
  • oracle advanced supply chain planning12.2
  • oracle business intelligence12.2.1.3.0
  • oracle business intelligence12.2.1.4.0
  • oracle business intelligence5.9.0.0.0
  • oracle business process management suite12.2.1.3.0
  • oracle business process management suite12.2.1.4.0
  • oracle communications eagle ftp table base retrieval4.5
  • oracle communications instant messaging server10.0.1.5.0
  • oracle communications messaging server8.1
  • oracle communications network integrity7.3.6
  • oracle communications offline mediation controllerbefore 12.0.0.4.4
  • oracle communications offline mediation controller12.0.0.5.0
  • oracle communications unified inventory management7.4.1
  • oracle communications unified inventory management7.4.2
  • oracle e-business suite cloud manager and cloud backup modulebefore 2.2.1.1.1
  • oracle e-business suite cloud manager and cloud backup module2.2.1.1.1
  • oracle enterprise manager base platform13.4.0.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.

  • Apache Software Foundation Apache Log4j 1.x

    • 1.2.1 and later · before unspecifiedaffected
    • unspecified and later · up to and including 2.0-alpha1affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8parfaitbefore 0.5.4-4.module_el8.5.0+2610+de2b8c0b0.5.4-4.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8parfaitbefore 0.5.4-4.module_el8.5.0+235+62ea77380.5.4-4.module_el8.5.0+235+62ea7738
AlmaLinux:8parfait-examplesbefore 0.5.4-4.module_el8.5.0+235+62ea77380.5.4-4.module_el8.5.0+235+62ea7738
AlmaLinux:8parfait-examplesbefore 0.5.4-4.module_el8.5.0+2610+de2b8c0b0.5.4-4.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8parfait-javadocbefore 0.5.4-4.module_el8.5.0+235+62ea77380.5.4-4.module_el8.5.0+235+62ea7738
AlmaLinux:8parfait-javadocbefore 0.5.4-4.module_el8.5.0+2610+de2b8c0b0.5.4-4.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8pcp-parfait-agentbefore 0.5.4-4.module_el8.5.0+235+62ea77380.5.4-4.module_el8.5.0+235+62ea7738
AlmaLinux:8pcp-parfait-agentbefore 0.5.4-4.module_el8.5.0+2610+de2b8c0b0.5.4-4.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8si-unitsbefore 0.6.5-2.module_el8.5.0+235+62ea77380.6.5-2.module_el8.5.0+235+62ea7738
AlmaLinux:8si-unitsbefore 0.6.5-2.module_el8.5.0+2610+de2b8c0b0.6.5-2.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8si-units-javadocbefore 0.6.5-2.module_el8.5.0+235+62ea77380.6.5-2.module_el8.5.0+235+62ea7738
AlmaLinux:8si-units-javadocbefore 0.6.5-2.module_el8.5.0+2610+de2b8c0b0.6.5-2.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8unit-apibefore 1.0-5.module_el8.5.0+2610+de2b8c0b1.0-5.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8unit-apibefore 1.0-5.module_el8.5.0+235+62ea77381.0-5.module_el8.5.0+235+62ea7738
AlmaLinux:8unit-api-javadocbefore 1.0-5.module_el8.5.0+2610+de2b8c0b1.0-5.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8unit-api-javadocbefore 1.0-5.module_el8.5.0+235+62ea77381.0-5.module_el8.5.0+235+62ea7738
AlmaLinux:8uom-libbefore 1.0.1-6.module_el8.5.0+235+62ea77381.0.1-6.module_el8.5.0+235+62ea7738
AlmaLinux:8uom-libbefore 1.0.1-6.module_el8.5.0+2610+de2b8c0b1.0.1-6.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8uom-lib-javadocbefore 1.0.1-6.module_el8.5.0+235+62ea77381.0.1-6.module_el8.5.0+235+62ea7738
AlmaLinux:8uom-lib-javadocbefore 1.0.1-6.module_el8.5.0+2610+de2b8c0b1.0.1-6.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8uom-parentbefore 1.0.3-3.module_el8.5.0+235+62ea77381.0.3-3.module_el8.5.0+235+62ea7738
AlmaLinux:8uom-parentbefore 1.0.3-3.module_el8.5.0+2610+de2b8c0b1.0.3-3.module_el8.5.0+2610+de2b8c0b
AlmaLinux:8uom-sebefore 1.0.4-3.module_el8.5.0+235+62ea77381.0.4-3.module_el8.5.0+235+62ea7738
AlmaLinux:8uom-sebefore 1.0.4-3.module_el8.5.0+2610+de2b8c0b1.0.4-3.module_el8.5.0+2610+de2b8c0b

+96

Same product

apache: all records

Other highest-scoring records for the same primary product.

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:parfait0.5.4-4.module_el8.5.0+235+62ea7738 · AlmaLinux:8Package registry (OSV)
almalinux:parfait-examples0.5.4-4.module_el8.5.0+2610+de2b8c0b · AlmaLinux:8Package registry (OSV)
almalinux:parfait-javadoc0.5.4-4.module_el8.5.0+235+62ea7738 · AlmaLinux:8Package registry (OSV)
almalinux:pcp-parfait-agent0.5.4-4.module_el8.5.0+2610+de2b8c0b · AlmaLinux:8Package registry (OSV)
almalinux:si-units0.6.5-2.module_el8.5.0+235+62ea7738 · AlmaLinux:8Package registry (OSV)
almalinux:si-units-javadoc0.6.5-2.module_el8.5.0+2610+de2b8c0b · AlmaLinux:8Package registry (OSV)
almalinux:unit-api1.0-5.module_el8.5.0+2610+de2b8c0b · AlmaLinux:8Package registry (OSV)
almalinux:unit-api-javadoc1.0-5.module_el8.5.0+2610+de2b8c0b · AlmaLinux:8Package registry (OSV)
almalinux:uom-lib1.0.1-6.module_el8.5.0+2610+de2b8c0b · AlmaLinux:8Package registry (OSV)
almalinux:uom-lib-javadoc1.0.1-6.module_el8.5.0+2610+de2b8c0b · AlmaLinux:8Package registry (OSV)
almalinux:uom-parent1.0.3-3.module_el8.5.0+235+62ea7738 · AlmaLinux:8Package registry (OSV)
almalinux:uom-se1.0.4-3.module_el8.5.0+235+62ea7738 · AlmaLinux:8Package registry (OSV)
debian:apache-log4j1.21.2.17-11 · Debian:12Package registry (OSV)
opensuse:kafka2.1.0-bp153.2.6.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:kafka-kit2.1.0-bp153.2.6.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:log4j1.2.17-5.9.1 · openSUSE:Leap 15.3Package registry (OSV)
opensuse:log4j121.2.17-4.9.1 · openSUSE:Leap 15.3Package registry (OSV)
red hat:parfait0:0.5.4-4.module+el8.4.0+13998+1b70e2b7 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:parfait-examples0:0.5.4-4.module+el8.4.0+13998+1b70e2b7 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:parfait-javadoc0:0.5.4-4.module+el8.4.0+13998+1b70e2b7 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:pcp-parfait-agent0:0.5.4-4.module+el8.4.0+13998+1b70e2b7 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:si-units0:0.6.5-2.module+el8+2463+615f6896 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:si-units-javadoc0:0.6.5-2.module+el8+2463+615f6896 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:unit-api0:1.0-5.module+el8+2463+615f6896 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:unit-api-javadoc0:1.0-5.module+el8+2463+615f6896 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:uom-lib0:1.0.1-6.module+el8+2463+615f6896 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:uom-lib-javadoc0:1.0.1-6.module+el8+2463+615f6896 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:uom-parent0:1.0.3-3.module+el8+2463+615f6896 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
red hat:uom-se0:1.0.4-3.module+el8+2463+615f6896 · Red Hat:rhel_eus:8.4::appstreamPackage registry (OSV)
rocky linux:parfait0:0.5.4-4.module+el8.5.0+728+553fbdb8 · Rocky Linux:8Package registry (OSV)

+20

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-502 · Deserialization of Untrusted Data

CVSS vector

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

nvd-primary

Root cause

Data received over the network is deserialized into the language’s native object format without verifying its source. Code paths inside the object can be triggered during deserialization.

The bug in code

The whole CWE-502 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

python
payload = sock.recv(65536)job = pickle.loads(payload)

Fixed

python
payload = sock.recv(65536)if not hmac.compare_digest(sign(payload), header_sig):    raise PermissionError("invalid signature")job = JobSchema.validate(json.loads(payload))

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records