CVE-2020-1945

2020-05-1400:00:00

ubuntu.com

apache ant

temporary directory

sensitive information

file injection

cve-2020-1945

cve-2020-11979

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.002

Percentile

58.7%

JSON

Apache Ant 1.1 to 1.9.14 and 1.10.0 to 1.10.7 uses the default temporary
directory identified by the Java system property java.io.tmpdir for several
tasks and may thus leak sensitive information. The fixcrlf and
replaceregexp tasks also copy files from the temporary directory back into
the build tree allowing an attacker to inject modified source files into
the build process.

Notes

Author	Note
msalvatore	There are two potential mitigations for this vulnerability. 1) Set your umask to 077. 2) Set your JVM’s java.io.tmpdir system property to a directory only readable and writable by the current user running Ant. The fix for this CVE is incomplete. CVE-2020-11979 finishes resolving the issue.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchant< 1.10.5-3~18.04.1~esm1UNKNOWN
ubuntu19.10noarchant< 1.10.6-1ubuntu0.1UNKNOWN
ubuntu20.04noarchant< 1.10.7-1ubuntu0.1~esm1UNKNOWN
ubuntu14.04noarchant< 1.9.3-2ubuntu0.1+esm1UNKNOWN
ubuntu16.04noarchant< 1.9.6-1ubuntu1.1+esm1UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	ant	< 1.10.5-3~18.04.1~esm1	UNKNOWN
ubuntu	19.10	noarch	ant	< 1.10.6-1ubuntu0.1	UNKNOWN
ubuntu	20.04	noarch	ant	< 1.10.7-1ubuntu0.1~esm1	UNKNOWN
ubuntu	14.04	noarch	ant	< 1.9.3-2ubuntu0.1+esm1	UNKNOWN
ubuntu	16.04	noarch	ant	< 1.9.6-1ubuntu1.1+esm1	UNKNOWN