Researchers from Claroty and JFrog published the results of a security audit for the BusyBox package, which is widely used in embedded devices and offers a set of standard UNIX utilities packaged as a single executable file. The audit uncovered 14 vulnerabilities, all of which have been addressed in the August release of BusyBox 1.34. Almost all of these issues are non-threatening and questionable in terms of applicability in real attacks, as they require utilities to be run with externally supplied arguments. <\/p>\n
Notably, the vulnerability CVE-2021-42374 allows for a denial of service when handling a specially crafted compressed file with the unlzma utility, and if built with the CONFIG_FEATURE_SEAMLESS_LZMA option, also affects other BusyBox components including tar, unzip, rpm, dpkg, lzma, and man. <\/p>\n
Vulnerabilities CVE-2021-42373, CVE-2021-42375, CVE-2021-42376, and CVE-2021-42377 can lead to denial of service but require the man, ash, and hush utilities to be executed with parameters set by the attacker. Vulnerabilities from CVE-2021-42378 to CVE-2021-42386 impact the awk utility and could potentially lead to code execution, but this requires the attacker to achieve the execution of a specific pattern in awk (the attacker needs to run awk with input data received from them in the first command-line argument). <\/p>\n
Additionally, a vulnerability (CVE-2021-43523) has been noted in the uclibc and uclibc-ng libraries related to the fact that when calling the functions gethostbyname(), getaddrinfo(), gethostbyaddr(), and getnameinfo(), there is no validation and sanitization of the domain name returned by the DNS server. For example, in response to a specific resolution request, a maliciously controlled DNS server could return hosts like .attacker.com and they would be returned unchanged to some program, which, without sanitization, might display them in a web interface. The issue has been resolved in the uclibc-ng 1.0.39 release by adding code to validate the integrity of the returned values. domain names<\/a>, implemented similarly to Glibc. \u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0439 Claroty \u0438 JFrog \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0430\u0443\u0434\u0438\u0442\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 BusyBox, \u0448\u0438\u0440\u043e\u043a\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0433\u043e \u0432\u043e \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430\u0445 \u0438 \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u0433\u043e \u043d\u0430\u0431\u043e\u0440 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0445 \u0443\u0442\u0438\u043b\u0438\u0442 UNIX, \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u0432 \u0432\u0438\u0434\u0435 \u0435\u0434\u0438\u043d\u043e\u0433\u043e \u0438\u0441\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0444\u0430\u0439\u043b\u0430. \u0412 \u0445\u043e\u0434\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043e 14 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0443\u0436\u0435 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0432 \u0430\u0432\u0433\u0443\u0441\u0442\u043e\u0432\u0441\u043a\u043e\u043c \u0432\u044b\u043f\u0443\u0441\u043a\u0435 BusyBox 1.34. \u041f\u043e\u0447\u0442\u0438 \u0432\u0441\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u043d\u0435\u043e\u043f\u0430\u0441\u043d\u044b \u0438 \u0441\u043e\u043c\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b \u0441 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 \u0440\u0435\u0430\u043b\u044c\u043d\u044b\u0445 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-102257","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47The security analysis of the BusyBox package revealed 14 non-critical vulnerabilities | ProHoster","description":"Researchers from Claroty and JFrog have published the 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Source: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"