printf vulnerable to Regular Expression Denial of Service (ReDoS)

높음 7.5CVE-2021-23354 · GHSA-xfhp-gmh8-r8v2 · SNYK-JS-PRINTF-1072096 · Published 12/03/2021 · updated 17/06/2026

요약

CVE-2021-23354은(는) printf (adaltas), printf에 영향을 주는 높음 (CVSS 7.5) 취약점입니다.
향후 30일 내 악용 확률(EPSS): 2.2%, 전체 취약점의 82.4%보다 높음.
조치: 0.6.1 이상으로 업데이트하세요.

Package	Affected versions	Patched versions
printf adaltas	`< 0.6.1`	`0.6.1`
printf npm	`< 0.6.1`	`0.6.1`

Description

The package printf before 0.6.1 are vulnerable to Regular Expression Denial of Service (ReDoS) via the regex string

/\%(?:\(([\w_.]+)\)|([1-9]\d*)\$)?([0 +\-\]*)(\*|\d+)?(\.)?(\*|\d+)?[hlL]?([\%bscdeEfFgGioOuxX])/g

in lib/printf.js. The vulnerable regular expression has cubic worst-case time complexity.

NVD description

The package printf before 0.6.1 are vulnerable to Regular Expression Denial of Service (ReDoS) via the regex string /\%(?:$([\w_.]+)$|([1-9]\d*)\$)?([0 +\-\]*)(\*|\d+)?(\.)?(\*|\d+)?[hlL]?([\%bscdeEfFgGioOuxX])/g in lib/printf.js. The vulnerable regular expression has cubic worst-case time complexity.

References

nvd.nist.gov/vuln/detail/CVE-2021-23354 · ADVISORY
adaltas/node-printf · WEB
adaltas/node-printf#32 · WEB
adaltas/node-printf commit a8502e7 · WEB
snyk.io/vuln/SNYK-JS-PRINTF-1072096 · WEB

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