NULL Pointer Dereference Affecting busybox-petitboot package, versions <1:1.34.1-1.13.amzn1
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Test your applications- Snyk ID SNYK-AMZN201803-BUSYBOXPETITBOOT-2348073
- published 20 Jan 2022
- disclosed 15 Nov 2021
Introduced: 15 Nov 2021
CVE-2021-42376 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2018.03 busybox-petitboot to version 1:1.34.1-1.13.amzn1 or higher.
This issue was patched in ALAS-2022-1558.
NVD Description
Note: Versions mentioned in the description apply only to the upstream busybox-petitboot package and not the busybox-petitboot package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.
A NULL pointer dereference in Busybox's hush applet leads to denial of service when processing a crafted shell command, due to missing validation after a \x03 delimiter character. This may be used for DoS under very rare conditions of filtered command input.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42376
- https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/
- https://security.netapp.com/advisory/ntap-20211223-0002/
- https://claroty.com/team82/research/unboxing-busybox-14-vulnerabilities-uncovered-by-claroty-jfrog
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/