| Vulnerability Name: | CVE-2021-32751 (CCN-205958) | ||||||||||||
| Assigned: | 2021-07-20 | ||||||||||||
| Published: | 2021-07-20 | ||||||||||||
| Updated: | 2021-07-30 | ||||||||||||
| Summary: | Gradle is a build tool with a focus on build automation. In versions prior to 7.2, start scripts generated by the `application` plugin and the `gradlew` script are both vulnerable to arbitrary code execution when an attacker is able to change environment variables for the user running the script. This may impact those who use `gradlew` on Unix-like systems or use the scripts generated by Gradle in thieir application on Unix-like systems. For this vulnerability to be exploitable, an attacker needs to be able to set the value of particular environment variables and have those environment variables be seen by the vulnerable scripts. This issue has been patched in Gradle 7.2 by removing the use of `eval` and requiring the use of the `bash` shell. There are a few workarounds available. For CI/CD systems using the Gradle build tool, one may ensure that untrusted users are unable to change environment variables for the user that executes `gradlew`. If one is unable to upgrade to Gradle 7.2, one may generate a new `gradlew` script with Gradle 7.2 and use it for older versions of Gradle. Fpplications using start scripts generated by Gradle, one may ensure that untrusted users are unable to change environment variables for the user that executes the start script. A vulnerable start script could be manually patched to remove the use of `eval` or the use of environment variables that affect the application's command-line. If the application is simple enough, one may be able to avoid the use of the start scripts by running the application directly with Java command. | ||||||||||||
| CVSS v3 Severity: | 7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) 6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
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| CVSS v2 Severity: | 8.5 High (CVSS v2 Vector: AV:N/AC:M/Au:S/C:C/I:C/A:C)
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| Vulnerability Type: | CWE-78 | ||||||||||||
| Vulnerability Consequences: | Gain Access | ||||||||||||
| References: | Source: MITRE Type: CNA CVE-2021-32751 Source: XF Type: UNKNOWN gradle-cve202132751-code-exec(205958) Source: CCN Type: Gradle GIT Repository Arbitrary code execution via specially crafted environment variables Source: CONFIRM Type: Exploit, Third Party Advisory https://github.com/gradle/gradle/security/advisories/GHSA-6j2p-252f-7mw8 Source: MISC Type: Exploit, Third Party Advisory https://medium.com/dot-debug/the-perils-of-bash-eval-cc5f9e309cae Source: MISC Type: Exploit, Third Party Advisory https://mywiki.wooledge.org/BashFAQ/048 Source: CCN Type: WhiteSource Vulnerability Database CVE-2021-32751 | ||||||||||||
| Vulnerable Configuration: | Configuration 1: Denotes that component is vulnerable | ||||||||||||
| Oval Definitions | |||||||||||||
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