`CVE-2021-36373` Apache Ant

Affected software	Apache Ant
Severity	5.5 Medium CVSS 3.1 2 scores
Fixed in	`1.9.16`, `1.10.11`
Weakness	CWE-130
Published	14 Jul 2021
Updated	25 Aug 2026

Description

When reading a specially crafted TAR archive an Apache Ant build can be made to allocate large amounts of memory that finally leads to an out of memory error, even for small inputs. This can be used to disrupt builds using Apache Ant. Apache Ant prior to 1.9.16 and 1.10.11 were affected.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 5 years ago.

CISA KEV not listed
VulnCheck KEV not listed
CISA Vulnrichment no assessment published
Indexed PoC none indexed
EPSS 2.5% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists.

Protection none
Action unverified
Review automated Upstream data
Record active

Decided by	Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding	This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

Decided by

Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all

Finding

This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

CVSS

5.5 MEDIUM v3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

Version Score Band Vector Assigner Type

CVSS 3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H NVD Primary published

CVSS 2.0 4.3 none AV:N/AC:M/Au:N/C:N/I:N/A:P NVD Primary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.1	5.5	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`	NVD	Primary	published
CVSS 2.0	4.3	none	`AV:N/AC:M/Au:N/C:N/I:N/A:P`	NVD	Primary

Affected software and releases

Oracle advisories

Advisory	Type	Quarter	Products Oracle names in its risk matrix
Oracle Critical Patch Update July 2024 ↗	CPU	2024-Q3	Oracle Fusion Middleware / Third Party (Apache Ant) (12.2.1.4.0)
Oracle Critical Patch Update April 2024 ↗	CPU	2024-Q2	Oracle Systems / Tools (Apache Ant) (4)
Oracle Critical Patch Update October 2023 ↗	CPU	2023-Q4	Oracle Fusion Middleware / Centralized Thirdparty Jars (Apache Ant) (14.1.1.0.0)
Oracle Critical Patch Update July 2023 ↗	CPU	2023-Q3	Oracle Fusion Middleware / Installer (Apache Ant) (12.2.1.4.0)
Oracle Critical Patch Update April 2023 ↗	CPU	2023-Q2	Oracle JD Edwards / Deployment SEC (Apache Ant) (Prior to 9.2.7.3)

Advisory

Type

Quarter

Products Oracle names in its risk matrix

Oracle Critical Patch Update July 2024 ↗

CPU

2024-Q3

Oracle Fusion Middleware / Third Party (Apache Ant) (12.2.1.4.0)

Oracle Critical Patch Update April 2024 ↗

CPU

2024-Q2

Oracle Systems / Tools (Apache Ant) (4)

Oracle Critical Patch Update October 2023 ↗

CPU

2023-Q4

Oracle Fusion Middleware / Centralized Thirdparty Jars (Apache Ant) (14.1.1.0.0)

Oracle Critical Patch Update July 2023 ↗

CPU

2023-Q3

Oracle Fusion Middleware / Installer (Apache Ant) (12.2.1.4.0)

Oracle Critical Patch Update April 2023 ↗

CPU

2023-Q2

Oracle JD Edwards / Deployment SEC (Apache Ant) (Prior to 9.2.7.3)

Oracle components and versions

Family	Component	Versions, as Oracle lists them	Read as
Oracle Fusion Middleware	Centralized Thirdparty Jars (Apache Ant)	14.1.1.0.0	14.1.1.0.0
Oracle Fusion Middleware	Installer (Apache Ant)	12.2.1.4.0	12.2.1.4.0
Oracle Fusion Middleware	Third Party (Apache Ant)	12.2.1.4.0	12.2.1.4.0
Oracle JD Edwards	Deployment SEC (Apache Ant)	Prior to 9.2.7.3
Oracle Systems	Tools (Apache Ant)	4	4

Maven packages

Affected and fixed versions, from OSV.dev

Package Introduced Fixed Last affected

org.apache.ant:ant 0 1.9.16 unbounded

org.apache.ant:ant 1.10.0 1.10.11 unbounded

Package	Introduced	Fixed	Last affected
`org.apache.ant:ant`	0	`1.9.16`	unbounded
`org.apache.ant:ant`	1.10.0	`1.10.11`	unbounded

Products and versions

33 products, 75 version entries

Source	Vendor	Product	Scheme	Affected versions
nvd	apache	ant	generic	≥ 1.9.0 and ＜ 1.9.16 · ≥ 1.10.0 and ＜ 1.10.11
nvd	oracle	agile product lifecycle management	generic	9.3.6
nvd	oracle	banking trade finance	generic	14.5
nvd	oracle	banking treasury management	generic	14.5
nvd	oracle	communications cloud native core automated test suite	generic	1.9.0
nvd	oracle	communications cloud native core binding support function	generic	1.11.0
nvd	oracle	communications order and service management	generic	7.3 · 7.4
nvd	oracle	communications unified inventory management	generic	7.3.0 · 7.4.0 · 7.4.1 · 7.4.2 · 7.5.0
nvd	oracle	enterprise repository	generic	11.1.1.7.0
nvd	oracle	financial services analytical applications infrastructure	generic	≥ 8.0.6 and ≤ 8.1.1
nvd	oracle	insurance policy administration	generic	≥ 11.0 and ≤ 11.3.1
nvd	oracle	primavera gateway	generic	≥ 17.12.0 and ≤ 17.12.11 · ≥ 18.8.0 and ≤ 18.8.12 · ≥ 19.12.0 and ≤ 19.12.11 · ≥ 20.12.0 and ≤ 20.12.7
nvd	oracle	primavera unifier	generic	≥ 17.7 and ≤ 17.12 · 18.8 · 19.12 · 20.12
nvd	oracle	real-time decision server	generic	3.2.0.0 · 11.1.1.9.0
nvd	oracle	retail advanced inventory planning	generic	14.1 · 15.0 · 16.0
nvd	oracle	retail back office	generic	14.0 · 14.1
nvd	oracle	retail bulk data integration	generic	16.0.3.0 · 19.0.1
nvd	oracle	retail central office	generic	14.0 · 14.1
nvd	oracle	retail eftlink	generic	19.0.1 · 20.0.1
nvd	oracle	retail extract transform and load	generic	13.2.8
nvd	oracle	retail financial integration	generic	14.1.3.2 · 15.0.4.0 · 16.0.3.0
nvd	oracle	retail integration bus	generic	14.1.3.2 · 15.0.4.0 · 16.0.3.0 · 19.0.1.0
nvd	oracle	retail invoice matching	generic	16.0.3
nvd	oracle	retail merchandising system	generic	19.0.1
nvd	oracle	retail point-of-service	generic	14.0 · 14.1
nvd	oracle	retail predictive application server	generic	14.1.3 · 15.0.3 · 16.0.3.0
nvd	oracle	retail service backbone	generic	14.1.3.2 · 15.0.4.0 · 16.0.3.0 · 19.0.1.0
nvd	oracle	retail store inventory management	generic	14.1 · 15.0 · 16.0
nvd	oracle	retail xstore point of service	generic	16.0.6 · 17.0.4 · 18.0.3 · 19.0.2 · 20.0.1
nvd	oracle	timesten in-memory database	generic	＜ 11.2.2.8.27
nvd	oracle	utilities framework	generic	4.2.0.2.0 · 4.2.0.3.0 · ≥ 4.3.0.1.0 and ≤ 4.3.0.6.0 · 4.4.0.0.0 · 4.4.0.2.0 · 4.4.0.3.0
nvd	oracle	utilities testing accelerator	generic	6.0.0.1.1
osv	org.apache.ant	ant	generic	＜ 1.9.16 · ≥ 1.10.0 and ＜ 1.10.11

Source

Vendor

Product

Scheme

Affected versions

nvd

apache

ant

generic

≥ 1.9.0 and ＜ 1.9.16 · ≥ 1.10.0 and ＜ 1.10.11

nvd

oracle

agile product lifecycle management

generic

9.3.6

nvd

oracle

banking trade finance

generic

14.5

nvd

oracle

banking treasury management

generic

14.5

nvd

oracle

communications cloud native core automated test suite

generic

1.9.0

nvd

oracle

communications cloud native core binding support function

generic

1.11.0

nvd

oracle

communications order and service management

generic

7.3 · 7.4

nvd

oracle

communications unified inventory management

generic

7.3.0 · 7.4.0 · 7.4.1 · 7.4.2 · 7.5.0

nvd

oracle

enterprise repository

generic

11.1.1.7.0

nvd

oracle

financial services analytical applications infrastructure

generic

≥ 8.0.6 and ≤ 8.1.1

nvd

oracle

insurance policy administration

generic

≥ 11.0 and ≤ 11.3.1

nvd

oracle

primavera gateway

generic

≥ 17.12.0 and ≤ 17.12.11 · ≥ 18.8.0 and ≤ 18.8.12 · ≥ 19.12.0 and ≤ 19.12.11 · ≥ 20.12.0 and ≤ 20.12.7

nvd

oracle

primavera unifier

generic

≥ 17.7 and ≤ 17.12 · 18.8 · 19.12 · 20.12

nvd

oracle

real-time decision server

generic

3.2.0.0 · 11.1.1.9.0

nvd

oracle

retail advanced inventory planning

generic

14.1 · 15.0 · 16.0

nvd

oracle

retail back office

generic

14.0 · 14.1

nvd

oracle

retail bulk data integration

generic

16.0.3.0 · 19.0.1

nvd

oracle

retail central office

generic

14.0 · 14.1

nvd

oracle

retail eftlink

generic

19.0.1 · 20.0.1

nvd

oracle

retail extract transform and load

generic

13.2.8

nvd

oracle

retail financial integration

generic

14.1.3.2 · 15.0.4.0 · 16.0.3.0

nvd

oracle

retail integration bus

generic

14.1.3.2 · 15.0.4.0 · 16.0.3.0 · 19.0.1.0

nvd

oracle

retail invoice matching

generic

16.0.3

nvd

oracle

retail merchandising system

generic

19.0.1

nvd

oracle

retail point-of-service

generic

14.0 · 14.1

nvd

oracle

retail predictive application server

generic

14.1.3 · 15.0.3 · 16.0.3.0

nvd

oracle

retail service backbone

generic

14.1.3.2 · 15.0.4.0 · 16.0.3.0 · 19.0.1.0

nvd

oracle

retail store inventory management

generic

14.1 · 15.0 · 16.0

nvd

oracle

retail xstore point of service

generic

16.0.6 · 17.0.4 · 18.0.3 · 19.0.2 · 20.0.1

nvd

oracle

timesten in-memory database

generic

＜ 11.2.2.8.27

nvd

oracle

utilities framework

generic

4.2.0.2.0 · 4.2.0.3.0 · ≥ 4.3.0.1.0 and ≤ 4.3.0.6.0 · 4.4.0.0.0 · 4.4.0.2.0 · 4.4.0.3.0

nvd

oracle

utilities testing accelerator

generic

6.0.0.1.1

osv

org.apache.ant

ant

generic

＜ 1.9.16 · ≥ 1.10.0 and ＜ 1.10.11

References

URL	Tags
https://ant.apache.org/security.html	WEB
https://lists.apache.org/thread.html/r27919fd4db07c487239c1d9771f480d89ce5ee2750aa9447309b709a@%3Ccommits.groovy.apache.org%3E	WEB
https://lists.apache.org/thread.html/r544c9e8487431768465b8b2d13982c75123109bd816acf839d46010d@%3Ccommits.groovy.apache.org%3E	WEB
https://lists.apache.org/thread.html/r54afdab05e01de970649c2d91a993f68a6b00cd73e6e34e16c832d46%40%3Cuser.ant.apache.org%3E	WEB
https://lists.apache.org/thread.html/rad36f470647c5a7c02dd78c9973356d2840766d132b597b6444e373a@%3Cnotifications.groovy.apache.org%3E	WEB
https://lists.apache.org/thread.html/rf4bb79751a02889623195715925e4fd8932dd3c97e0ade91395a96c6@%3Cdev.myfaces.apache.org%3E	WEB
https://security.netapp.com/advisory/ntap-20210819-0007	WEB
https://www.oracle.com/security-alerts/cpuapr2022.html	WEB
https://www.oracle.com/security-alerts/cpujan2022.html	WEB
https://www.oracle.com/security-alerts/cpujul2022.html	WEB

URL

Timeline

Published	2021-07-14	By the CVE Program.
NVD record modified	2026-08-25	NVD's own last-modified date for this record.

Published

2021-07-14

By the CVE Program.

NVD record modified

2026-08-25

NVD's own last-modified date for this record.

How VRT decided (17 of 24 rules ran)

17 of 24 rules ran. The rest didn't run because an earlier rule had already settled the CVE.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? the first rule that matches decides

1 rejected no match CVE Program withdrawal of this identifier

scope: Is it a vulnerability Waratek protects? the first rule that matches decides

2 armr-patch-file no match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no match An ARMR security-rule template on disk for this CVE

4 manual-classification no match A researcher's recorded decision for this specific CVE

5 manual classification no match Manual classification of this CVE in the legacy dataset

6 non-java-upstream no match A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component no match The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the JInitiator browser plug-in, the native WebLogic proxy plug-in, or a native part of Oracle Application Server or Collaboration Suite (HTTP Server, Web Cache, Internet Directory, mail and calendar servers). Oracle gives these no CPE of their own and names them only in the description.

8 java-client-side no match Oracle's own risk-matrix note saying the CVE is reached only through untrusted code in the Java sandbox (applets, Web Start) or only through a client installation of Java, so a server running its own trusted code is not exposed

9 osv-maven matched In scope Maven packages: org.apache.ant:ant

10 cna-maven-package not reached An affected Maven artifact named by the CNA itself

11 known-cpe-product not reached An NVD CPE naming a product ARMR tracks

12 cna-cpe-product not reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

13 oracle-advisory-family not reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

14 cna-named-product not reached A tracked product named in words by the CVE's own CNA, on a record with no CPE yet. Apache and Eclipse publish these on advisory day, before NVD adds CPE data.

15 non-deployable-product not reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

16 unmatched-product not reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? every rule runs

17 patch-hint no match A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

18 open-source-maven matched Mitigation candidate Open-source Maven artifact indexed by OSV (Maven packages: org.apache.ant:ant). The source is public, which makes an ARMR patch rule a candidate; nothing here establishes that one can be written.

19 poc-derivable skipped An indexed exploit clearing the evidence bar to reverse-engineer, where there is no source to read

20 no-exploit skipped Nothing to build a rule from yet: no published exploit, no CISA record of exploitation and no source-level change to read

21 secure-rule-match no match A vulnerability class already blocked by an ARMR security rule

22 exploited-no-fix-or-poc skipped Somebody exploiting this CVE (a CISA or VulnCheck KEV listing, or a CISA verdict of active exploitation), with no fix, source code or PoC to build a rule from

23 below-action-threshold withheld CVE ships in Oracle Critical Patch Update July 2024, Oracle Critical Patch Update April 2024, Oracle Critical Patch Update October 2023, Oracle Critical Patch Update July 2023, Oracle Critical Patch Update April 2023 (CPU) — Oracle treats it as urgent, so severity does not settle it

24 no-exploit-published decided it matched No exploit published No exploit code has been published, and an upstream fix path does exist, so the remediation half of the candidacy still holds.

Products the scope rules checked

The products this CVE's record names, and whether VRT tracks each one. The scope rules decided on these.

Vendor Product Tracked CPE Source

apache ant not tracked cpe:2.3:a:apache:ant:*:*:*:*:*:*:*:*

oracle agile_product_lifecycle_management tracked cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.6:*:*:*:*:*:*:* yaml

oracle banking_trade_finance tracked cpe:2.3:a:oracle:banking_trade_finance:14.5:*:*:*:*:*:*:* yaml

oracle banking_treasury_management tracked cpe:2.3:a:oracle:banking_treasury_management:14.5:*:*:*:*:*:*:* yaml

oracle communications_cloud_native_core_automated_test_suite tracked cpe:2.3:a:oracle:communications_cloud_native_core_automated_test_suite:1.9.0:*:*:*:*:*:*:* yaml

oracle communications_cloud_native_core_binding_support_function tracked cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:* yaml

oracle communications_order_and_service_management tracked cpe:2.3:a:oracle:communications_order_and_service_management:7.3:*:*:*:*:*:*:* yaml

oracle communications_unified_inventory_management tracked cpe:2.3:a:oracle:communications_unified_inventory_management:7.3.0:*:*:*:*:*:*:* yaml

oracle enterprise_repository not tracked cpe:2.3:a:oracle:enterprise_repository:11.1.1.7.0:*:*:*:*:*:*:*

oracle financial_services_analytical_applications_infrastructure tracked cpe:2.3:a:oracle:financial_services_analytical_applications_infrastructure:*:*:*:*:*:*:*:* yaml

oracle insurance_policy_administration tracked cpe:2.3:a:oracle:insurance_policy_administration:*:*:*:*:*:*:*:* yaml

oracle primavera_gateway tracked cpe:2.3:a:oracle:primavera_gateway:*:*:*:*:*:*:*:* yaml

oracle primavera_unifier tracked cpe:2.3:a:oracle:primavera_unifier:*:*:*:*:*:*:*:* yaml

oracle real-time_decision_server not tracked cpe:2.3:a:oracle:real-time_decision_server:3.2.0.0:*:*:*:*:*:*:*

oracle retail_advanced_inventory_planning tracked cpe:2.3:a:oracle:retail_advanced_inventory_planning:14.1:*:*:*:*:*:*:* yaml

oracle retail_back_office tracked cpe:2.3:a:oracle:retail_back_office:14.0:*:*:*:*:*:*:* yaml

oracle retail_bulk_data_integration tracked cpe:2.3:a:oracle:retail_bulk_data_integration:16.0.3.0:*:*:*:*:*:*:* yaml

oracle retail_central_office tracked cpe:2.3:a:oracle:retail_central_office:14.0:*:*:*:*:*:*:* yaml

oracle retail_eftlink tracked cpe:2.3:a:oracle:retail_eftlink:19.0.1:*:*:*:*:*:*:* yaml

oracle retail_extract_transform_and_load tracked cpe:2.3:a:oracle:retail_extract_transform_and_load:13.2.8:*:*:*:*:*:*:* yaml

oracle retail_financial_integration tracked cpe:2.3:a:oracle:retail_financial_integration:14.1.3.2:*:*:*:*:*:*:* yaml

oracle retail_integration_bus tracked cpe:2.3:a:oracle:retail_integration_bus:14.1.3.2:*:*:*:*:*:*:* yaml

oracle retail_invoice_matching tracked cpe:2.3:a:oracle:retail_invoice_matching:16.0.3:*:*:*:*:*:*:* yaml

oracle retail_merchandising_system tracked cpe:2.3:a:oracle:retail_merchandising_system:19.0.1:*:*:*:*:*:*:* yaml

oracle retail_point-of-service tracked cpe:2.3:a:oracle:retail_point-of-service:14.0:*:*:*:*:*:*:* yaml

oracle retail_predictive_application_server tracked cpe:2.3:a:oracle:retail_predictive_application_server:14.1.3:*:*:*:*:*:*:* yaml

oracle retail_service_backbone tracked cpe:2.3:a:oracle:retail_service_backbone:14.1.3.2:*:*:*:*:*:*:* yaml

oracle retail_store_inventory_management tracked cpe:2.3:a:oracle:retail_store_inventory_management:14.1:*:*:*:*:*:*:* yaml

oracle retail_xstore_point_of_service tracked cpe:2.3:a:oracle:retail_xstore_point_of_service:16.0.6:*:*:*:*:*:*:* yaml

oracle timesten_in-memory_database not tracked cpe:2.3:a:oracle:timesten_in-memory_database:*:*:*:*:*:*:*:*

oracle utilities_framework tracked cpe:2.3:a:oracle:utilities_framework:*:*:*:*:*:*:*:* yaml

oracle utilities_testing_accelerator tracked cpe:2.3:a:oracle:utilities_testing_accelerator:6.0.0.1.1:*:*:*:*:*:*:* yaml

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