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Fencer Vulns
high 7.5

CVE-2020-11979 json

Code injection in Apache Ant

published 2020-10-01 6 y ago modified 2026-10-08 31 d ago also BIT-gradle-2020-11979 , EUVD-2021-0549 , GHSA-f62v-xpxf-3v68 , GHSA-j45w-qrgf-25vm

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.8%
EPSS 7.8% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

As mitigation for CVE-2020-1945 Apache Ant 1.10.8 changed the permissions of temporary files it created so that only the current user was allowed to access them. Unfortunately the fixcrlf task deleted the temporary file and created a new one without said protection, effectively nullifying the effort. This would still allow an attacker to inject modified source files into the build process.

Patch / fix

  • maven org.apache.ant:ant 1.10.9
  • bitnami gradle 6.8.0
  • gradle gradle 6.8.0
  • oracle timesten_in-memory_database 11.2.2.8.27
  • ant Debian 14, Debian 13, Debian 12 1.10.9-1

debian advisories DEBIAN-CVE-2020-11979

  • jenkins openshift 3.11 2.263.3.1612433584-1.el7
  • python-rsa openshift 3.11 4.5-3.el7
  • python2-rsa openshift 3.11 4.5-3.el7
  • jenkins-2-plugins openshift 3.11 3.11.1612862361-1.el7
  • runc openshift 4.5 1.0.0-72.rhaos4.5.giteadfc6b.el8
  • conmon openshift 4.5 2:2.0.21-1.rhaos4.5.el7
  • conmon openshift 4.5 2:2.0.21-1.rhaos4.5.el8
  • jenkins openshift 4.5 2.263.3.1612434332-1.el7

red hat advisories RHSA-2021:0637RHSA-2021:0429RHSA-2021:0423

  • ant SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 1.9.4-3.12.1
  • ant-antlr SLE Software Development Kit 12 SP5 1.9.4-3.12.3

suse advisories SUSE-SU-2022:4022-1

  • ant openSUSE Tumbleweed 1.10.10-1.2

opensuse advisories openSUSE-SU-2024:10616-1

  • gradle Alpine 3.24, Alpine 3.23, Alpine 3.22 +8 more 6.8.3-r0
  • apache-ant Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 1.10.9-r0

alpine advisories ALPINE-CVE-2020-11979

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ant Arch Linux 1.10.9-1

arch linux advisories AVG-1312

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-11979 updated cvss 6.2

ant: insecure temporary file

  • Red Hat BPM Suite 6 ant
    affected: no fix planned “Out of support scope”
  • Red Hat Decision Manager 7 ant
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 5 ant Red Hat Enterprise Linux 6 ant, ant-jmf, ant-jsch, ant-trax, ant-antlr, ant-junit, +15 more Red Hat Enterprise Linux 7 ant, ant-jmf, ant-jsch, ant-antlr, ant-junit, ant-swing, +14 more Red Hat JBoss BRMS 5 ant Red Hat JBoss Data Virtualization 6 ant Red Hat JBoss Enterprise Application Platform 5 ant
    +3 more products
    Red Hat JBoss Enterprise Application Platform 6 ant Red Hat JBoss Fuse Service Works 6 ant Red Hat JBoss Operations Network 3 ant
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Container Platform 4 openshift4/ose-metering-hive Red Hat Process Automation 7 ant
    affected: no fix planned “Will not fix”
  • Red Hat OpenShift Container Platform 3.11 jenkins 2.263.3.1612433584-1.el7
    fixed: vendor fix RHSA-2021:0637
  • Red Hat OpenShift Container Platform 4.5 conmon 2.0.21-1.rhaos4.5.el7, conmon 2.0.21-1.rhaos4.5.el8, jenkins 2.263.3.1612434332-1.el7, runc 1.0.0-72.rhaos4.5.giteadfc6b.el8, openshift 4.5.0-202102050524.p0.git.0.9229406.el7, openshift 4.5.0-202102050524.p0.git.0.9229406.el8, +9 more
    fixed: vendor fix RHSA-2021:0429
  • Red Hat OpenShift Container Platform 4.6 jenkins 2.263.3.1612434510-1.el8
    fixed: vendor fix RHSA-2021:0423
  • Red Hat Enterprise Linux 8 ant, ant-xz, ant-jmf, ant-lib, ant-jsch, ant-antlr, +16 more Red Hat OpenShift Container Platform 3.11 jenkins-2-plugins, haproxy 1.8.28-1.el7, python-rsa 4.5-3.el7, python2-rsa 4.5-3.el7, haproxy18 1.8.28-1.el7, jenkins-2-plugins 3.11.1612862361-1.el7, +40 more Red Hat OpenShift Container Platform 4 jenkins-2-plugins Red Hat OpenShift Container Platform 4.6 python-rsa 4.7-1.el8, python3-rsa 4.7-1.el8, runc 1.0.0-82.rhaos4.6.git086e841.el7, runc 1.0.0-82.rhaos4.6.git086e841.el8, cri-o 1.19.1-7.rhaos4.6.git6377f68.el7, jenkins-2-plugins 4.6.1612257979-1.el8, +16 more Red Hat Single Sign-On 7 rh-sso7-keycloak rh-sso7-keycloak Red Hat streams for Apache Kafka ant
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
31 d ago

Exploit prediction

7.76% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.ant:ant
<1.10.9
1.10.9
bitnami gradle
<6.8.0
6.8.0

Affected products

  • n/a Apache Ant

Classification

Weakness
  • CWE-379 Creation of Temporary File in Directory with Insecure Permissions
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.